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Product name：(3,4-Dihydroxy-5-nitrophenyl)(4-methylphenyl)methanone
Structure：
Molecular Formula：C14H11NO5
Molecular Weight：273.24
CAS Number：134308-13-7
NMPA approval No.：H20050205
National Drug standards：YBH02292005-2016Z
Test | USP | Results |
Color & Appearance | yollow crystalline powder | yollow crystalline powder |
Infrared spectrum | consistent with the structure | Conforms |
Assay (HPLC ) | 98.5 % ~101.5% | 99.9 % |
Total impurities (HPLC) | NMT 0.5 % | 0. 1% |
Related compound A (4N-Methyl-3,4-dihydroxybenzophenone) | NMT 0.1 % | Conforms |
Related compound B (4-Hydroxy-3-methoxy-4¢-methyl-5-nitrobenzophenone ) | NMT 0.2 % | Conforms |
Unknown impurities ( individual ) | NMT 0.1 % | Conforms |
Loss on Drying | NMT 0.1 % ( 80℃) | 0.06 % |
Residue on ignition | NMT 0.1% | 0.05% |
Heavy metals (as Pb) | NMT 20 ppm | Conforms |
Package: 1kg
Storage ：Preserve in tight light-resistant containers ,and store between 20℃～25℃.
Manufacturing
