It is composed of a ureido ring fused with a tetrahydrothiophene ring. A valeric acid substituent is attached to one of the carbon atoms of the tetrahydrothiophene ring. Biotin is a coenzyme for carboxylase enzymes, involved in the synthesis of fatty acids, isoleucine, and valine, and in gluconeogenesis.
|Appearance||White or off-white crystalline powder||Conform|
|Specific Rotation||+89° ~+93°||+90.3°|
|Organic volatile impurity||Meets USP requirement||Conform|
|Assay (Titration,0.IN NaOH)||98.5% 〜100.5%||99.80%|
|Loss on Drying||≤0.2%||0.04%|
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