| Title:  Benfotiamine CAS Registry Number:  22457-89-2 CAS Name:  Benzenecarbothioic acid S-[2-[[(4-amino-2-methyl-5-pyrimidinyl)methyl]formylamino]-1-[2-(phosphonooxy)ethyl]-1-propenyl] ester Additional Names:  thiobenzoic acid S-ester with N-[(4-amino-2-methyl-5-pyrimidinyl)methyl]-N-(4-hydroxy-2-mercapto-1-methyl-1-butenyl)formamide O-phosphate;  S-benzoylthiamine monophosphate;  BTMP Trademarks:  Biotamin (Sankyo);  Vitanevril (Sanofi Winthrop) Molecular Formula:  C19H23N4O6PS Molecular Weight:  466.45 Percent Composition:  C 48.92%, H 4.97%, N 12.01%, O 20.58%, P 6.64%, S 6.87% Literature References:  Vitamin B1 source.  Prepn:  A. Ito et al., DE 1130811 (1962), C.A. 57, 13764h (1962).  Exists as 3 temperature dependent crystalline forms, a, g, d:  A. Ito et al., Takamine Kenkyusho Nempo 14, 64 (1962); C.A. 59, 3920a (1963).  Pharmacokinetics:  H. Nogami et al., Chem. Pharm. Bull. 18, 1937 (1970).  Clinical bioequivalence to thiamine:  R. Bitsch et al., Ann. Nutr. Metab. 35, 292 (1991). Properties:  Crystals, dec 165° (d-form). Therap-Cat:  Vitamin (enzyme cofactor). Keywords:  Enzyme Cofactor; Vitamin/Vitamin Source; Vitamin B1.  |