Kobayashi, Hirokazu et al. published their research in Applied Magnetic Resonance in 2020 | CAS: 14691-89-5

4-Acetamido-2,2,6,6-tetramethylpiperidine 1-oxyl (cas: 14691-89-5) 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 derivatives are being utilized in different ways as anticancer, antiviral, antimalarial, antimicrobial, antifungal, antihypertension, analgesic, anti-inflammatory, anti-Alzheimer, antipsychotic and/or anticoagulant agents.Reference of 14691-89-5

Molecular Orientation and Dynamics of a Derivative of 2,2,6,6-Tetramethyl-1-Piperidinyloxyl Radical with a Large Substituent Group Dispersed in 1D-Nanochannels of 2,4,6-Tris(4-Chlorophenoxy)-1,3,5-Triazine Crystal was written by Kobayashi, Hirokazu;Odanaka, Yuki. And the article was included in Applied Magnetic Resonance in 2020.Reference of 14691-89-5 This article mentions the following:

The mol. orientation and dynamics were examined for 4-acetamido-2,2,6,6-tetramethyl-1-piperidinyloxyl (4-acetamido-TEMPO) radicals, which have a larger substituent group than many other TEMPO radicals, dispersed in the one-dimensional (1D) nanochannel of 2,4,6-tris(4-chlorophenoxy)-1,3,5-triazine (CLPOT) with 4-substituted-2,2,6,6-tetramethylpiperidine (R-TEMP; R=OH or H). When TEMPOH (R=OH) was used as a spacer for dispersion in the CLPOT nanochannels, the mol. orientation of 4-acetamido-TEMPO in the CLPOT nanochannels was similar to that of other previously reported 4-substituted-TEMPO (4-X-TEMPO; X=OH, =O or OCH3) radicals. However, the activation energy for the rotational diffusion of 4-acetamido-TEMPO in the CLPOT nanochannels, estimated to be 11 kJ mol-1, was larger than that of other 4-X-TEMPO mols. (6-8 kJ mol-1). These results indicate that the mol. dynamics of 4-X-TEMPO in the CLPOT nanochannels can be controlled by the selection of a larger substituent X at the 4-position in 4-X-TEMPO (in this study, X=NHCOCH3), and also suggest an important concept for the design of new organic magnets. In the experiment, the researchers used many compounds, for example, 4-Acetamido-2,2,6,6-tetramethylpiperidine 1-oxyl (cas: 14691-89-5Reference of 14691-89-5).

4-Acetamido-2,2,6,6-tetramethylpiperidine 1-oxyl (cas: 14691-89-5) 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 derivatives are being utilized in different ways as anticancer, antiviral, antimalarial, antimicrobial, antifungal, antihypertension, analgesic, anti-inflammatory, anti-Alzheimer, antipsychotic and/or anticoagulant agents.Reference of 14691-89-5

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem