Biotin is a water-soluble B-vitamin, also called vitamin B7 and formerly known as vitamin H or coenzyme R.

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.

Test Items	Standards	Results
Appearance	White or off-white crystalline powder	Conform
Identification	Infrared Absorption	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%

1. Biotin treat arteriosclerosis, stroke, lipid metabolism disorders, hypertension, coronary heart disease and blood circulation obstacle disease.    
2. Used in cosmetics, can improve blood circulation in the skin blood vessels in the rate of 0.1% ~ 1.0% of the concentration range,easy-to-formula mixed in the oil phase. In the skin care cream, sports liquid legs with analgesic cream, shaving liquid, shampoo can be used in.
3. Preliminary research suggests that supplemental biotin might help reduce blood sugar levels in people. possibly reduce the symptoms of diabetic neuropathy.