USD $100.00-100.00 / Kilogram
USD $10.00-90.00 / Kilogram
USD $8.80-8.80 / Gram
USD $10.00-90.00 / Kilogram
USD $2.00-2.00 / Gram
USD $1.00-10.00 / Kilogram
USD $2.00-2.00 / Gram
USD $2.00-2.00 / Gram
we have gmp cp2010 standard
cobamamide
appearance |
dark red crystal or noncrystalline powder |
identification 1(uv) |
the absorption exihibits maxima at 264nm、285nm、305nm、460nm |
identification 2(hplc) |
the principal peak obtained with the test solution for assay is consistent with the reference solution in retention time |
identification 3(ir) |
the infrared absorbtion altas of this production should be consistent with the standard |
hydroxocobalamin (uv) |
a460/a352≥0.90 |
related substance (hplc) |
≤1.0% |
loss on drying |
≤12.0% |
assay (on anhydrous basis)(hplc) |
98.0%~102.0% |
residual solvent(gc)
|
acetone≤0.5%
|
|
ethanol≤0.5% |
|
total plate count ≤1000cfu/g (plate culture) |