CAS number： 3810-74-0
Molecular formula： C42H84N14O36S3
molecular weight： 1457.3836
Chemical structure：
| Name of Product: | Streptomycin Sulfate | |
| Shelf Life: | 2 years | |
| Specification: | EP8.0 | |
| Test Items | Specification | Results of Analysis |
| Characters | A white or almost white powder, hygroscopic, very soluble in water, practically insoluble in ethanol | Conform |
| Identification | A.TLC-test:Principal spot should be as per ref.standard | Conform |
| B.Reaction with ferric chloride:voilet colour develops | Conform | |
| C.Reaction with sodium Hypochloride:Red colour develops | Conform | |
| D.Reaction with hydrochloride acid:faint yellow colour develops | Conform | |
| E.Reaction of sulfates | Conform | |
| Appearance of solution | Colour:Not more intense than ref.sol 3 | 5# |
| Clarity:Not more opals than ref.suspension II | ＜1# | |
| PH | 4.5 to 7.0 | 5.7 |
| Methanol | Not more than 0.3% | NA |
| Streptomycin B | Not more than 3.0% | Conform |
| Loss on drying | Not more than 7.0% | 5.6% |
| Sulfated ash | Not more than 1.0% | 0.3% |
| Sulfate | 18.0% to 21.5% | 19.8% |
| Colorimetric test | Not less than 90.0% | 99% |
| Assay (dried potency) | Not less than 720IU/mg | 758IU/mg |
