CAS No.: |
111974-72-2 |
Molecular formula: |
C21H25N3O4S 1/2C4H4O4 |
Appearance: |
Almost white crystalline powder |
Identification: |
IR, NMR spectrum match with R.S |
Melting point: |
172°C to 176°C |
PH: |
5.0-6.0 |
Loss on drying: |
NMT 0.5% |
Residue on ignition: |
NMT0.10%; |
Heavy Metals: |
NMT 10ppm; |
Residual solvents: |
Matches with ICH requirement. |
Related substance: |
Any individual impurity: NMT 0.10%; |
(by HPLC)Total impurities: |
NMT 0.5%. |
Assay: |
NMT 99.5% |