Structural Formula Vector Image
Title: Cycothiamin(e)
CAS Registry Number: 6092-18-8
CAS Name: N-[(4-Amino-2-methyl-5-pyrimidinyl)methyl]-N-[1-(2-oxo-1,3-oxathian-4-ylidene)ethyl]formamide
Additional Names: carbothiamine; cyclocarbothiamine; cycotiamine; CCT
Trademarks: Cometamine (Yamanouchi); Commetamin
Molecular Formula: C13H16N4O3S
Molecular Weight: 308.36
Percent Composition: C 50.64%, H 5.23%, N 18.17%, O 15.57%, S 10.40%
Literature References: Prepn: NL 6511842 corresp. to Murakami et al., US 3324124 (1966, 1967 to Yamanouchi Seiyaku).
Properties: Crystals from water, dec 175.5°.
Derivative Type: Hydrochloride
Molecular Formula: C13H16N4O3S.HCl
Molecular Weight: 344.82
Percent Composition: C 45.28%, H 4.97%, N 16.25%, O 13.92%, S 9.30%, Cl 10.28%
Properties: Crystals from methanol+ ethyl acetate, or from ethylene dichloride, dec 179-180°.
Therap-Cat: Oral thiamine therapy.
Keywords: Enzyme Cofactor; Vitamin/Vitamin Source; Vitamin B1.
Status: This monograph has been retired and is no longer subject to revision or update.

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