ITEM

STANDARD

APPEARANCE

Dark red crystals or noncrystalline powder

ASSAY(on anhydrous basis)

98.0%-102.0%

LOSS ON DRYING

≤12.0%

IDENTIFICATION (UV)

The absorption exhibits maxima at 264 nm,285nm,305nm and 460nm

IDENTIFICATION (IR)

The infrared absorbtion altas of this production should be consistent with the standard

IDENTIFICATION (HPLC)

The principal peak obtained with the test solution for assay is consistent with the reference solution in retention time.

HYDROXOCOBALAMIN(UV)

A460/A352≥0.90

RELATED SUBSTANCES(HPLC)

≤1.0%

ACETONE

≤0.5%

ETHANOL

≤0.5%

TOTAL PLATE COUNT(PLATECULTURE)

≤1000CFU/G