Berthod, A. et al. published their research in Chromatographia in 2001 | CAS: 1722-95-8

(R)-2-Methylpiperidine (cas: 1722-95-8) belongs to piperidine derivatives. The piperidine moiety constitutes an important building block for the synthesis of a variety of bioactive natural products, alkaloids and other drugs. Some chemotherapeutic agents have piperidine moiety within their structure, foremost among them, vinblastine and raloxifene.Product Details of 1722-95-8

Ionic liquids as stationary phase solvents for methylated cyclodextrins in gas chromatography was written by Berthod, A.;He, L.;Armstrong, D. W.. And the article was included in Chromatographia in 2001.Product Details of 1722-95-8 This article mentions the following:

Room temperature ionic liquids (RTIL) are molten salts with m.ps. well below room temperature 1-Butyl-3-methylimidazolium chloride is a typical example of such RTIL. It was used as a solvent to dissolve permethylated-尾-cyclodextrin (BPM) and dimethylated-尾-cyclodextrin (BDM) to prepare stationary phases for capillary columns in gas chromatog. for chiral separation The RTIL containing columns were compared to com. columns containing the same chiral selectors. A set of 64 chiral compounds separated by the com. BPM column was tested on the RTIL BPM column. Only 21 were enantioresolved. Similarly, a set of 80 compounds separated by the com. BDM column was passed on the RTIL BDM column with only 16 pos. separations Probably the imidazolium ion pair could make an inclusion complex with the cyclodextrin cavity, blocking it for chiral recognition. All the chiral compounds recognized by the RTIL columns had their asym. carbon that was part of a ring structure. The retention factors of the derivatized solutes were lower on the RTIL columns than those obtained on the com. equivalent column. The peak efficiencies obtained with the RTIL capillary were significantly higher than that obtained with the com. column. These observations may contribute to the knowledge of the mechanism of cyclodextrin-based GC enantioselective separations In the experiment, the researchers used many compounds, for example, (R)-2-Methylpiperidine (cas: 1722-95-8Product Details of 1722-95-8).

(R)-2-Methylpiperidine (cas: 1722-95-8) belongs to piperidine derivatives. The piperidine moiety constitutes an important building block for the synthesis of a variety of bioactive natural products, alkaloids and other drugs. Some chemotherapeutic agents have piperidine moiety within their structure, foremost among them, vinblastine and raloxifene.Product Details of 1722-95-8

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

 

Pugniere, Martine et al. published their research in Journal of Chromatography A in 1997 | CAS: 1722-95-8

(R)-2-Methylpiperidine (cas: 1722-95-8) belongs to piperidine derivatives.Piperidine is a key saturated heterocyclic scaffold found in several of the top-selling small molecule pharmaceuticals and natural alkaloids, with a diverse range of biological activities. Piperidine derivatives bearing a masked aldehyde function in the 蔚-position are easily transformed into quinolizidine compounds through intramolecular reductive amination.Reference of 1722-95-8

Adsorption liquid chromatography on silica for the chiral separation of amino acids and asymmetric amines derivatized with optically active N-伪-9-fluorenylmethyloxycarbonyl-amino acid-N-carboxyanhydrides was written by Pugniere, Martine;Mattras, Helene;Castro, Bertrand;Previero, Aldo. And the article was included in Journal of Chromatography A in 1997.Reference of 1722-95-8 This article mentions the following:

Optically pure N-伪-Fmoc-amino acid-N-carboxyanhydrides (Fmoc-AA-NCAs, Fmoc = 9-fluorenylmethyloxycarbonyl) are proposed as precolumn reagents for the chiral anal. of asym. amines, including 伪-amino acid alkyl esters. Separation of diastereomers arising from racemic amines was better achieved by liquid-solid adsorption chromatog. on silica than by reversed-phase techniques. Sample preparation is easily performed, and the properties of the Fmoc group allows high sensitivity by fluorescent detection. In this mode, picomolar limits of enantiomeric excess were detected. In the experiment, the researchers used many compounds, for example, (R)-2-Methylpiperidine (cas: 1722-95-8Reference of 1722-95-8).

(R)-2-Methylpiperidine (cas: 1722-95-8) belongs to piperidine derivatives.Piperidine is a key saturated heterocyclic scaffold found in several of the top-selling small molecule pharmaceuticals and natural alkaloids, with a diverse range of biological activities. Piperidine derivatives bearing a masked aldehyde function in the 蔚-position are easily transformed into quinolizidine compounds through intramolecular reductive amination.Reference of 1722-95-8

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

 

Anet, Frank A. L. et al. published their research in Journal of the American Chemical Society in 1989 | CAS: 1722-95-8

(R)-2-Methylpiperidine (cas: 1722-95-8) belongs to piperidine derivatives. The piperidine structural motif is present in numerous natural alkaloids. These include piperine, which gives black pepper its spicy taste. Industrially, piperidine is produced by the hydrogenation of pyridine, usually over a molybdenum disulfide catalyst. Pyridine can also be reduced to piperidine via a modified Birch reduction using sodium in ethanol.Application In Synthesis of (R)-2-Methylpiperidine

Stereogenic (chiral) methyl groups: determination of configuration by direct tritium NMR spectroscopy was written by Anet, Frank A. L.;O’Leary, Daniel J.;Beale, John M.;Floss, Heinz G.. And the article was included in Journal of the American Chemical Society in 1989.Application In Synthesis of (R)-2-Methylpiperidine This article mentions the following:

The configuration of CHDTX, where X is a leaving group, can be determined by direct tritium NMR of the product obtained by methylation of resolved 2-methylpiperidine with CHDTX and this provides a new and highly accurate determination of enantiomeric purity in CHDTX. The two diastereomers of [7-2H1,3H]-1,2-dimethylpiperidine differ in chem. shifts by 4.4 Hz (0.014 ppm), with the tritium more shielded in the (2R,7S) than in the (2S,7S) diastereomer, in agreement with predictions based on the proton NMR of the racemate of 1,2-dimethylpiperidine monodeuterated on the N-Me group. In the experiment, the researchers used many compounds, for example, (R)-2-Methylpiperidine (cas: 1722-95-8Application In Synthesis of (R)-2-Methylpiperidine).

(R)-2-Methylpiperidine (cas: 1722-95-8) belongs to piperidine derivatives. The piperidine structural motif is present in numerous natural alkaloids. These include piperine, which gives black pepper its spicy taste. Industrially, piperidine is produced by the hydrogenation of pyridine, usually over a molybdenum disulfide catalyst. Pyridine can also be reduced to piperidine via a modified Birch reduction using sodium in ethanol.Application In Synthesis of (R)-2-Methylpiperidine

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

 

Tanaka, Hiroaki et al. published their research in Bioorganic & Medicinal Chemistry in 2020 | CAS: 1722-95-8

(R)-2-Methylpiperidine (cas: 1722-95-8) belongs to piperidine derivatives. The piperidine ring can be found not only in more than half of the currently known structures of alkaloids, but also in many natural or synthetic compounds with interesting biological activities. Piperidine prefers a chair conformation, similar to cyclohexane. Unlike cyclohexane, piperidine has two distinguishable chair conformations: one with the N鈥揌 bond in an axial position, and the other in an equatorial position.Related Products of 1722-95-8

Discovery and structure-activity relationships study of positive allosteric modulators of the M3 muscarinic acetylcholine receptor was written by Tanaka, Hiroaki;Negoro, Kenji;Koike, Takanori;Tsukamoto, Issei;Yokoyama, Kazuhiro;Maeda, Jun;Inagaki, Yusuke;Shimoshige, Yukinori;Ino, Katsutoshi;Ishizu, Kenichiro;Takahashi, Taisuke. And the article was included in Bioorganic & Medicinal Chemistry in 2020.Related Products of 1722-95-8 This article mentions the following:

The M3 muscarinic acetylcholine receptor (mAChR) is a member of the family of mAChRs, which are associated with a variety of physiol. functions including the contraction of various smooth muscle tissues, stimulation of glandular secretion, and regulation of a range of cholinergic processes in the central nerve system. We report here the discovery and a comprehensive structure-activity relationships (SARs) study of novel pos. allosteric modulators (PAMs) of the M3 mAChR through a high throughput screening (HTS) campaign. Compound 9(I) exhibited potent in vitro PAM activity towards the M3 mAChR and significant enhancement of muscle contraction in a concentration-dependent manner when applied to isolated smooth muscle strips of rat bladder. Compound 9 also showed excellent subtype selectivity over other subtypes of mAChRs including M1, M2, and M4 mAChRs, and moderate selectivity over the M5 mAChR, indicating that compound 9 is an M3-preferring M3/M5 dual PAM. Moreover, compound 9 displayed acceptable pharmacokinetics profiles after oral dosing to rats. These results suggest that compound 9 may be a promising chem. probe for the M3 mAChR for further investigation of its pharmacol. function both in vitro and in vivo. In the experiment, the researchers used many compounds, for example, (R)-2-Methylpiperidine (cas: 1722-95-8Related Products of 1722-95-8).

(R)-2-Methylpiperidine (cas: 1722-95-8) belongs to piperidine derivatives. The piperidine ring can be found not only in more than half of the currently known structures of alkaloids, but also in many natural or synthetic compounds with interesting biological activities. Piperidine prefers a chair conformation, similar to cyclohexane. Unlike cyclohexane, piperidine has two distinguishable chair conformations: one with the N鈥揌 bond in an axial position, and the other in an equatorial position.Related Products of 1722-95-8

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

 

Allen, Scott E. et al. published their research in Journal of the American Chemical Society in 2014 | CAS: 1722-95-8

(R)-2-Methylpiperidine (cas: 1722-95-8) belongs to piperidine derivatives. Piperidine has a role as a reagent, a protic solvent, a base, a catalyst, a plant metabolite, a human metabolite and a non-polar solvent. The piperidine and polyhydroxylated indolizidine derivatives have shown to be promising α-glucosidase inhibitors. The former are analogs of DNJ with an improved α-glucosidase inhibitory profile than that of DNJ. Boisson et al.Recommanded Product: 1722-95-8

Concerted Amidation of Activated Esters: Reaction Path and Origins of Selectivity in the Kinetic Resolution of Cyclic Amines via N-Heterocyclic Carbenes and Hydroxamic Acid Cocatalyzed Acyl Transfer was written by Allen, Scott E.;Hsieh, Sheng-Ying;Gutierrez, Osvaldo;Bode, Jeffrey W.;Kozlowski, Marisa C.. And the article was included in Journal of the American Chemical Society in 2014.Recommanded Product: 1722-95-8 This article mentions the following:

The N-heterocyclic carbene and hydroxamic acid cocatalyzed kinetic resolution of cyclic amines generates enantioenriched amines and amides with selectivity factors up to 127. In this report, a quantum mech. study of the reaction mechanism indicates that the selectivity-determining aminolysis step occurs via a novel concerted pathway in which the hydroxamic acid plays a key role in directing proton transfer from the incoming amine. This modality was found to be general in amide bond formation from a number of activated esters including those generated from HOBt and HOAt, reagents that are broadly used in peptide coupling. For the kinetic resolution, the proposed model accurately predicts the faster reacting enantiomer. A breakdown of the steric and electronic control elements shows that a gearing effect in the transition state is responsible for the observed selectivity. In the experiment, the researchers used many compounds, for example, (R)-2-Methylpiperidine (cas: 1722-95-8Recommanded Product: 1722-95-8).

(R)-2-Methylpiperidine (cas: 1722-95-8) belongs to piperidine derivatives. Piperidine has a role as a reagent, a protic solvent, a base, a catalyst, a plant metabolite, a human metabolite and a non-polar solvent. The piperidine and polyhydroxylated indolizidine derivatives have shown to be promising α-glucosidase inhibitors. The former are analogs of DNJ with an improved α-glucosidase inhibitory profile than that of DNJ. Boisson et al.Recommanded Product: 1722-95-8

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

 

Mishra, Sandeep Kumar et al. published their research in Organic & Biomolecular Chemistry in 2014 | CAS: 1722-95-8

(R)-2-Methylpiperidine (cas: 1722-95-8) belongs to piperidine derivatives. Piperidine has a role as a reagent, a protic solvent, a base, a catalyst, a plant metabolite, a human metabolite and a non-polar solvent. Some chemotherapeutic agents have piperidine moiety within their structure, foremost among them, vinblastine and raloxifene.Formula: C6H13N

In situ approach for testing the enantiopurity of chiral amines and amino alcohols by 1H NMR was written by Mishra, Sandeep Kumar;Chaudhari, Sachin R.;Suryaprakash, N.. And the article was included in Organic & Biomolecular Chemistry in 2014.Formula: C6H13N This article mentions the following:

An in situ approach involving a simple mix and shake method for testing the enantiopurity of primary, secondary and tertiary chiral amines and their derivatives, chiral amino alcs., by 1H-NMR spectroscopy is developed. The protocol involves the in situ formation of chiral ammonium borate salt from a mixture of C2 sym. chiral BINOL, trialkoxyborane and chiral amines. The proposed concept was demonstrated convincingly on a large number of chiral and pro-chiral amines and amino alcs., and also aids the precise measurement of enantiomeric excess. The protocol can be completed in a couple of minutes directly in the NMR sample tube, without the need for any phys. separation In the experiment, the researchers used many compounds, for example, (R)-2-Methylpiperidine (cas: 1722-95-8Formula: C6H13N).

(R)-2-Methylpiperidine (cas: 1722-95-8) belongs to piperidine derivatives. Piperidine has a role as a reagent, a protic solvent, a base, a catalyst, a plant metabolite, a human metabolite and a non-polar solvent. Some chemotherapeutic agents have piperidine moiety within their structure, foremost among them, vinblastine and raloxifene.Formula: C6H13N

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

 

Ripperger, H. et al. published their research in Tetrahedron in 1965 | CAS: 1722-95-8

(R)-2-Methylpiperidine (cas: 1722-95-8) belongs to piperidine derivatives. Piperidine is a metabolite of cadaverine, a polyamine found in the human intestine. Some chemotherapeutic agents have piperidine moiety within their structure, foremost among them, vinblastine and raloxifene.Synthetic Route of C6H13N

Solanum alkaloids. L. Optical rotatory dispersion and circular dichroism. 1. Dithiourethans of cyclic amines was written by Ripperger, H.;Schreiber, K.. And the article was included in Tetrahedron in 1965.Synthetic Route of C6H13N This article mentions the following:

The dithiourethans of substituted piperidines with an asym. C atom were prepared and their optical rotatory dispersion as well as their circular dichroism were measured. The uv, O.R.D. and circular dichroism spectra were measured at 20掳 in dioxane. The amine (1 mole), 8 moles Et3N and CS2 in alc. kept 30 min. at 50掳 and 1 hr. at 50掳 after addition of 16 moles MeI and the mixture evaporated at 50掳 in vacuo gave the corresponding dithiourethans. The compounds were very unstable and could not be purified chromatographically on Al2O3. Resolution with L-tartaric acid gave 0.99 g. (R)-伪-pipecoline, m. 118-21掳, [伪]19D -31.8掳, converted in 20 ml. alc. and extracted with Et2O to yield 44% (R)-N-dithiocarbomethoxy-伪-pipecoline, b1.0 150-60掳. Conhydrine (143 mg.), m. 119-20掳, [伪]20D 9.9掳 (95% alc.) treated as above using 2 ml. EtOH and the product decomposed with H2O and extracted with Et2O yielded 14% N-dithiocarbomethoxyconhydrine, m. 25掳. Conversion of 104 mg. (22S, 25R)-22,26-imino-5伪-cholestane-3尾,16尾-diol using 30 ml. alc. yielded 46% N-dithiocarbomethoxydihydro-5伪-solasodan-3尾-ol A, m. 203-5掳. Dioxane (10 ml.) containing 104 mg. (22S, 25S)-22,26-imino-5伪-cholestane-3尾,16尾-diol kept 15 hrs. at 20掳 with 10 mg. NaOH in 0.25 ml. H2O and 21 mg. CS2, the mixture treated 15 hrs. at 20掳 with 145 mg. MeI and evaporated at 50掳 in vacuo yielded 54% N-dithiocarbomethoxydihydro-5伪-tomatidan-3尾-ol A, m. 133-6掳, (R)-Pipecolinic acid (1 millimole), m. 264掳, [伪]20D 28掳 (H2O) in 3 ml. H2O shaken 1 hr. at 20掳 with 2 ml. N NaOH and 114 mg. CS2 and the mixture shaken 2 hrs. with 218 mg. MeI, the Et2O-washed solution decomposed with 1 ml. N HCl and extracted with Et2O yielded 52% (R)-N-dithiocarbomethoxypipecolinic acid, m. 88.0-90.5掳. Dihydro-5伪-tomatidan-3尾-ol B (104 mg.) converted in the presence of 10 ml. alc. yielded 35% N-dithiocarbomethoxydihydro-5伪-tomatidan-3尾-ol B, m. 143-5掳. The molar amplitude, a, of the O.R.D. curves and the maximum molar ellipsity, [胃]maximum, of the dithiourethans were tabulated. The range of compounds investigated suggested that only the asym. at the 伪-C atom was important in determining the sign of the Cotton effect, and this correlation appeared to be generally useful in the assignment of the absolute 伪-configuration of cyclic amines. In the experiment, the researchers used many compounds, for example, (R)-2-Methylpiperidine (cas: 1722-95-8Synthetic Route of C6H13N).

(R)-2-Methylpiperidine (cas: 1722-95-8) belongs to piperidine derivatives. Piperidine is a metabolite of cadaverine, a polyamine found in the human intestine. Some chemotherapeutic agents have piperidine moiety within their structure, foremost among them, vinblastine and raloxifene.Synthetic Route of C6H13N

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

 

Pawlowska, Maria et al. published their research in Journal of Chromatography A in 1994 | CAS: 1722-95-8

(R)-2-Methylpiperidine (cas: 1722-95-8) belongs to piperidine derivatives. The piperidine structural motif is present in numerous natural alkaloids. These include piperine, which gives black pepper its spicy taste. Piperidine prefers a chair conformation, similar to cyclohexane. Unlike cyclohexane, piperidine has two distinguishable chair conformations: one with the N鈥揌 bond in an axial position, and the other in an equatorial position.SDS of cas: 1722-95-8

Sensitive enantiomeric separation of aliphatic and aromatic amines using aromatic anhydrides as non-chiral derivatizing agents was written by Pawlowska, Maria;Zukowski, Janusz;Armstrong, Daniel W.. And the article was included in Journal of Chromatography A in 1994.SDS of cas: 1722-95-8 This article mentions the following:

New pre-column derivatizing reagents: phthalic anhydride, 3-nitrophthalic anhydride, diphenic anhydride, 1,8-naphthalic anhydride and diphenylmaleic anhydride have been developed for resolving chiral compounds having amine groups. Although all of these agents produce derivatives with high molar absorptivities, the later two also fluoresce. Upon derivatization, aromatic analytes containing free carboxylic groups are produced. Both of these moieties enhance chiral recognition on cyclodextrin-based columns. The derivatization reaction is carried out at room temperature by shaking a buffered aqueous solution of a sample with an acetonitrile solution of the reagent. The reaction is fast and proceeds without any detectable racemization. The labeled compounds have favorable chromatog. properties which are demonstrated by resolution of a number of chiral compounds on cyclodextrin-bonded phases operated with non-aqueous polar organic eluents. The selectivity and good efficiency of this system contributes to its high sensitivity and in its applicability for detecting low levels of enantiomeric impurities. The detection limit is in the picomole range and less than 0.1% enantiomeric impurities can be determined in some cases. In the experiment, the researchers used many compounds, for example, (R)-2-Methylpiperidine (cas: 1722-95-8SDS of cas: 1722-95-8).

(R)-2-Methylpiperidine (cas: 1722-95-8) belongs to piperidine derivatives. The piperidine structural motif is present in numerous natural alkaloids. These include piperine, which gives black pepper its spicy taste. Piperidine prefers a chair conformation, similar to cyclohexane. Unlike cyclohexane, piperidine has two distinguishable chair conformations: one with the N鈥揌 bond in an axial position, and the other in an equatorial position.SDS of cas: 1722-95-8

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

 

Seo, Min-Seob et al. published their research in Journal of the American Chemical Society in 2015 | CAS: 1722-95-8

(R)-2-Methylpiperidine (cas: 1722-95-8) belongs to piperidine derivatives. The piperidine structural motif is present in numerous natural alkaloids. These include piperine, which gives black pepper its spicy taste. The piperidine and polyhydroxylated indolizidine derivatives have shown to be promising 伪-glucosidase inhibitors. The former are analogs of DNJ with an improved 伪-glucosidase inhibitory profile than that of DNJ. Boisson et al.Electric Literature of C6H13N

1H NMR Chiral Analysis of Charged Molecules via Ion Pairing with Aluminum Complexes was written by Seo, Min-Seob;Kim, Hyunwoo. And the article was included in Journal of the American Chemical Society in 2015.Electric Literature of C6H13N This article mentions the following:

Chiral anal., such as determination of identity, concentration, and relative ratio of optically active (chiral) mols., plays an indispensable role in contemporary synthetic, medicinal, and biol. chem. Here, we describe the selective control of metal-centered chirality in an octahedral geometry to prepare neg. charged AlIII complexes, which can be used as versatile 1H NMR chiral solvating agents for both pos. and neg. charged chiral mols. in polar or nonpolar solvents. During the formation of ion pairs between the AlIII complexes and the chiral analytes such as amines and carboxylic acids, the metal-centered chirality in the Al complexes plays a crucial role in providing anisochronous chem. shifts to the 1H NMR spectra. As a chiral solvating agent, AlIII complexes display an unprecedentedly broad substrate scope, good solvent compatibility, and operational simplicity. In the experiment, the researchers used many compounds, for example, (R)-2-Methylpiperidine (cas: 1722-95-8Electric Literature of C6H13N).

(R)-2-Methylpiperidine (cas: 1722-95-8) belongs to piperidine derivatives. The piperidine structural motif is present in numerous natural alkaloids. These include piperine, which gives black pepper its spicy taste. The piperidine and polyhydroxylated indolizidine derivatives have shown to be promising 伪-glucosidase inhibitors. The former are analogs of DNJ with an improved 伪-glucosidase inhibitory profile than that of DNJ. Boisson et al.Electric Literature of C6H13N

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

 

Mishra, Sandeep Kumar et al. published their research in Organic & Biomolecular Chemistry in 2014 | CAS: 1722-95-8

(R)-2-Methylpiperidine (cas: 1722-95-8) belongs to piperidine derivatives. Piperidine has a role as a reagent, a protic solvent, a base, a catalyst, a plant metabolite, a human metabolite and a non-polar solvent. Some chemotherapeutic agents have piperidine moiety within their structure, foremost among them, vinblastine and raloxifene.Formula: C6H13N

In situ approach for testing the enantiopurity of chiral amines and amino alcohols by 1H NMR was written by Mishra, Sandeep Kumar;Chaudhari, Sachin R.;Suryaprakash, N.. And the article was included in Organic & Biomolecular Chemistry in 2014.Formula: C6H13N This article mentions the following:

An in situ approach involving a simple mix and shake method for testing the enantiopurity of primary, secondary and tertiary chiral amines and their derivatives, chiral amino alcs., by 1H-NMR spectroscopy is developed. The protocol involves the in situ formation of chiral ammonium borate salt from a mixture of C2 sym. chiral BINOL, trialkoxyborane and chiral amines. The proposed concept was demonstrated convincingly on a large number of chiral and pro-chiral amines and amino alcs., and also aids the precise measurement of enantiomeric excess. The protocol can be completed in a couple of minutes directly in the NMR sample tube, without the need for any phys. separation In the experiment, the researchers used many compounds, for example, (R)-2-Methylpiperidine (cas: 1722-95-8Formula: C6H13N).

(R)-2-Methylpiperidine (cas: 1722-95-8) belongs to piperidine derivatives. Piperidine has a role as a reagent, a protic solvent, a base, a catalyst, a plant metabolite, a human metabolite and a non-polar solvent. Some chemotherapeutic agents have piperidine moiety within their structure, foremost among them, vinblastine and raloxifene.Formula: C6H13N

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem