《Decomposition of thiamine in alcohol solution. II》 was published in Chemical & Pharmaceutical Bulletin in 1974. These research results belong to Shimahara, Noboru; Asakawa, Hiroyuki; Kawamatsu, Yutaka; Hirano, Hiroshi. COA of Formula: C6H8ClN3 The article mentions the following:
Thiamine mononitrate I was decomposed in MeOH solution to produce the pentamer II and the thiazole III. II was converted to 9-amino-2,7,10-trimethyl-5H-dipyrimido[1,6-a:4′,5′-d]pyrimidine. Decomposition of thiamine monochloride in MeOH followed by AgNO3 gave II. II in aqueous solution reacted with acidic sodium sulfite to give 4-amino-2-methylpyrimidinyl-5-methanesulfonic acid. In the experiment, the researchers used many compounds, for example, 6-Chloro-2,5-dimethylpyrimidin-4-amine(cas: 18260-92-9COA of Formula: C6H8ClN3)
6-Chloro-2,5-dimethylpyrimidin-4-amine(cas: 18260-92-9) belongs to anime. Left-handed and right-handed forms (mirror-image configurations, known as optical isomers or enantiomers) are possible when all the substituents on the central nitrogen atom are different (i.e., the nitrogen is chiral). With amines, there is extremely rapid inversion in which the two configurations are interconverted.COA of Formula: C6H8ClN3
Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia