Betamethasone
CAS No.: 378-44-9
Product Name: Betamethasone
CAS#378-44-9
Package: 25kg/fiber drum
Delivery time: in stock for prompt shipment.
Dangerous goods or not: Not
Country of origin: China
CAS#378-44-9
Package: 25kg/fiber drum
Delivery time: in stock for prompt shipment.
Dangerous goods or not: Not
Country of origin: China
Description
Spec of Betamethasone :
| Items | Specification | Results |
| Appearance | White to practically white,odorless,crystalline powder. | White crystalline powder, odorless. |
| Identification | A:Infrared Spectroscopy | Complies |
| B: Thin-layer Chromatographio Identification test | Complies | |
| Specific optical rotation | +118°~ +126° | +124° |
| Residue on ignition | ≤ 0.2% | 0.02% |
| 0rdinary impurities | Total impurities< 2.0% | 0.09% |
| Loss on drying | ≤ 0.5% | 0.17% |
| Residual solvents | Methanol≤3000ppm | 182ppm |
| Acetone≤5000ppm | 78ppm | |
| Dichloromethane≤600ppm | 134ppm | |
| Assay(dried substance) | 97.0%~103.0% | 99.01% |
| Microbial Limit | Aerobie bacteria≤1000cfu/g | <10cfu/g |
| Mold and yeast ≤100cfu/g | <10cfu/g | |
| E. Coil can not be detected | Not Detected | |
| solubility | Sparingly soluble in acetone, in alcohol, in dioxane, and in methanol;very slightly soluble in chloroform and in ether;insoluble in water. | |
