Piperidine the name comes from the genus name Piper, which is the Latin word for pepper. 2403-88-5, formula is C9H19NO, Name is 2,2,6,6-Tetramethyl-4-piperidinol. Although piperidine is a common organic compound, it is best known as a representative structure element within many pharmaceuticals and alkaloids, such as natural-occurring solenopsins. Formula: C9H19NO.
Dintcheva, Nadka Tz;Al-Malaika, Sahar research published 《 Photo-stabilization of biopolymers-based nanocomposites with UV-modified layered silicates》, the research content is summarized as follows. Eco-friendly in-situ stabilized biopolymer nanocomposites based on polyamide 11 (PA11) and polylactic acid (PLA) were prepared by melt mixing in the presence of a modified organo-montmorillonite clay containing a chem.-bound hindered amine UV-stabilizing function, [(UV)OM-MMt]. Characterization of the newly synthesized organo-modifier containing the reactive hindered amine (HAS) UV-stabilizing function [(UV)OM] has confirmed a successful synthesis. The (UV)OM was then introduced into NaMMt through ion exchange reaction to prepare the UV stabilizer-bound organo-modified-MMt, [(UV)OM-MMt]. The in-situ stabilized PA11- and PLA- nanocomposites (PA11-(UV)OM-MMt and PLA-(UV)OM-MMt) were characterized and their photoxidative stabilities (under accelerated weathering conditions) were compared with their nanocomposite analogs containing either the organo-modified MMt (OM-MMt) alone (i.e. without UV-stabilizer) or the OM-MMT containing conventionally added com. hindered amine HAS-UV-stabilizer (Cyasorb UV-3853). It was found that both of the newly prepared in-situ stabilized PA11- and PLA- nanocomposites gave good clay dispersion and have demonstrated a much higher, especially in PLA-nanocomposites, photo-oxidative stability compared to the corresponding nanocomposites but in the absence, or the presence, of the conventionally added HAS-UV-stabilizer.
2403-88-5, 2,2,6,6-Tetramethyl-4-piperidinol(TEMPO) is a useful research compound. Its molecular formula is C9H19NO and its molecular weight is 157.25 g/mol. The purity is usually 95%.
TEMPO is an intermediate used in the preparation of Piperidinyloxy free radical derivatives.
TEMPO is an organic compound that acts as a radical scavenger. It is stable in the presence of water and air and can be used for the inhibition of bacterial growth. TEMPO reacts with reactive intermediates to form non-reactive substances and terminate chain reactions. This process is optimal at temperatures between 0°C and 40°C and pH values between 3.5 and 7.5. TEMPO has been shown to inhibit the growth of bacteria by reacting with reactive molecules such as amines, chlorides, or low energy radicals in aqueous solution. TEMPO also has genotoxic activity that inhibits DNA synthesis in bacterial cells through oxidation of guanine residues on DNA molecules., Formula: C9H19NO
Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem