
| Model NO. | CAS 55-03-8 |
| Customized | Customized |
| Suitable for | Adult |
| Purity | >99% |
| Appearances | White Powder |
| CAS | 55-03-8 |
| Trademark | WHSM |
| Origin | China |
| Powder | Yes |
| Certification | GMP, HSE, ISO 9001, USP, BP |
| State | Solid |
| Product Name | L-Thyroxine |
| Packaging Details | Foil Bag with Discreet Package |
| Delivery | Express Courier. |
| Specification | GMP, SGS, ISO, KOSHER |
| HS Code | 3002200000 |
Item | Specification | Result | |
| Appearance | An odorless, almost white or buff colored powder | pass | |
| Solubility | 1,Very slightly soluble in water | pass | |
| 2,slightly soluble in alcohol | pass | ||
| 3,practically insoluble in most other organic solvents | pass | ||
| 4,disolves in diluted aqueous sodium hydroxide solutions | Pass | ||
| Identification | a) Heat about 50 mg with a few drops of sulfuric acid in a porcelain crucible: violet vapors of iodine are evolved. | pass | |
| b)The retention time of the major peak is confirm to the RS | pass | ||
| Loss on Drying | Not more than 4.0% | 0.46% | |
[a]20/D C=1 in 1M HCl/EtOH 1:4 | +18 ~ +22o | +20.9o | |
| Assay(HPLC) | Not less than 95.0% | 99.18% | |
| Levothyroxine sodium | Not more than 5.0% | 0.68% | |
| Conclusion: | Up to the Standard for Export | ||
Items | Specifications |
| Appearance: | White crystals ,crystalline powder |
| Assay: | 99.0 - 100.5% |
| Specific Rotation: | -0.10 o --- +0.10 o |
| Residue on ignition: | 0.10% max |
| Water-insoluble substance: | 0.1% max |
| Fumaric Acid: | 1.0% max |
| Maleic Acid: | 0.05% max |
| Heavy metals(as Pb): | 10 ppm max |
| Arsenic(As) : | 4 ppm max |
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