Pharmaceutical Intermediate
L-Histidine Hydrochloride Monohydrate
Description
CAS No.: 5934-29-2
Appearance White crystalline powder or colorless crystals
State of solution Clear and not more
intensely coloured than
reference solution BY6
PH 3.0~5.0
Specific rotation ＋9.2~＋10.6
Ninhydrin-positive substances Not more intense than the
spot in the chromatogram obtained with reference
solution (0.5%)
Sulfaphates ≤300ppm
Ammonium ≤200ppm
Iron ≤10ppm
Heavy metals ≤10ppm
Loss on drying 7.0~10.0%
Sulphated ash ≤0.10%
Assay 98.5~101.0%
The Product Conforms to EP5
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amino acids
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