Vitamin B1 2% 20% 95% Thiamine or thiamin or vitamin B1 named as the "thio-vitamine" ("sulfur-containing vitamin") is a water-soluble vitamin of the B complex. First named aneurin for the detrimental neurological effects if not present in the diet, it was eventually assigned the generic descriptor name vitamin B1. Its phosphate derivatives are involved in many cellular processes. The best-characterized form is thiamine pyrophosphate (TPP), a coenzyme in the catabolism of sugars and amino acids. Thiamine is used in the biosynthesis of the neurotransmitter acetylcholine and gamma-aminobutyric acid (GABA). In yeast, TPP is also required in the first step of alcoholic fermentation.
ITEM
STANDARD
Appearance
White or almost white, crystalline powder or colourless crystals
Identification
IR,Characteristic Reaction and Test of chlorides
Assay
98.5-101.0
pH
2.7-3.3
Absorbance of solution
=<0.025
Solubility
Freely Soluble in Water,Soluble in Glycerol,Slightly Soluble in Alcohol
Appearance of solution
Clear and not more than Y7
Sulphates
=<300PPM
Limit of nitrate
No brown ring is produced
Heavy metals
=<20 PPM
Related substances
Any impurity % =<0.4
Water
=<5.0
Sulphated ash/Residueon ignition
=<0.1
Chromatographic purity
=<1.0