Vitamin B12 CAS:68-19-9

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1 Kilogram	FOB Price: USD 1.0000

1 Kilogram

FOB Price: USD 1.0000

Vitamin B12 Cyanocobalamin CAS:68-19-9

Name: Vitamin B12

Synonyms: Cyanocobalamin

CAS:68-19-9

MF: C63H88CoN14O14P

Analysis Item		Specification	Result	Test Method
Active Ingredeints
Assay on dried basis		96.0%-102.0%	98.4%	UV
Physical Control
Identification	A	A361nm/A278nm:1.70-1.90	1.38	UV
		A361nm/A550nm:3.15-3.40	3.30
	B	Positive	Complies	Colorimetry
	C	The retention time of major peak of the sample solution corresponds to that of the standard solution.	Complies	HPLC
Characteristics		Dark red crystal or crystalline Hygroscopic powder, with no smell and no taste.	Complies	Visual Method
Loss on Drying		≤12.0%	2.70%	USP(731)
Chemical Control
Total impurities		≤3.0%	1.7%	HPLC
7β,8β-lactocyanocobalamin		≤1.0%	0.4%	HPLC
50-carboxycyanocobalamin		≤0.5%	0.1%	HPLC
34-methylcyanocobalamin		≤2.0%	Not detected	HPLC
32-carboxycyanocobalamin		≤1.0%	0.2%	HPLC
8-Epi-cyanocobalamin		≤1.0%	0.02%	HPLC
Any other unidentified impurity		≤0.5%	0.4%	HPLC
Residual solvents(Acetone)		≤0.5%	0.27%	In house
Microbiological Control
Total Plate Count		1000cfu/g Max	Complies	USP(2021)
Yeast & Mold		100cfu/g Max	Complies	USP(2021)
E.Coli		Negative	Negative	USP(2022)