Sildenafil Citrate
Appearance: White crystalline powder
Solubility: Diffluent in Ach, slightly soluble in methanol, almost insoluble in chloroform
Identification HPLC: Comply with standard
IR: IR should comply with the reference standard spectrum
Loss on Drying: 1.0%max
Acidity:3.0-5.0
Residue on ignition:0.1%max
Heavy Metals: 20ppm max
Relevant Impurity: 0.5% max
Methanol: 0.3% max
Methylene dichloride; 0.06% max
N,N-Dimethyl formamide:0.088% max
Enterprise standard
Assay:99.9% min
Enterprise standard
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