biotin 58-85-5 vitamin H
★.Best quality according to requirement
★.Competitive price in China market
★.Mature Technical support
★.Professional logistic support
★.Shortest delivery time
Asure biochem provides high-quality raw materials for global pharmaceutical R&D and API production companies, biotechnology companies and reagent companies. The products mainly cover peptone series, biological buffers, vitamins, high-quality small molecule active compounds, protease inhibitors, pharmaceutical intermediates and antibiotics.
D-biotin package: 5KG/Tin, 10KG/carton.
COA of D-biotin
Test Item |
Specification |
Test Result |
Appearance |
A white or off white crystalline powder |
Conforms |
Solubility |
Very slightly soluble in water and in alcohol, practically insoluble in acetone. It is dissolves in dilute solutions of alkali hydroxides |
Conforms |
Identification A |
IR |
Conforms |
Identification B |
Reaction with bromine water |
Conforms |
Appearance of solution |
Solution S(EP) is clear and colorless |
Conforms |
Assay |
97.5%~100.5% |
98.2% |
Specific optical rotation |
+89°~+93° |
+90.4° |
Melting point |
229~232°C |
230~232°C |
Heavy Metals |
≤10mg/kg |
<10mg/kg |
Lead |
≤2mg/kg |
<2mg/kg |
Sulphated ash |
≤0.1% |
0.07% |
Loss on drying |
≤0.5% |
0.06% |
Related substances |
Any impurity shall not more than 0.5% At most one impurity more than 0.25% |
Conforms |
Organic volatile impurity |
Meet the requirement |
conforms |
Conclusion of analysis: Conforms to USP/FCC/EP Standards |
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