Norfloxacin

Appearance: This product is a crystalline powder ranging from off white to light yellow in color;
Solubility: It should be slightly soluble in N, N-dimethylformamide and minimally soluble in water or ethanol; Easy to dissolve in acetic acid, hydrochloric acid or sodium hydroxide solution;
Melting point: 218~224 ° C;
Clarity of the solution: Compared with the turbidity standard solution No. 2, it should not be more concentrated.
Regarding substances: Impurity A should not exceed 0.2%, individual impurities should not exceed 0.1%, and total impurities should not exceed 0.5%;
Dry weight loss: not exceeding 1.0%;
Burning residue: not exceeding 0.1%;
Heavy metals: not exceeding 15ppm;
Content: should be 98.5-102.0%.