Certificate of Analysis
| Product Name: | L-Thyroxine sodium salt pentahydrate |
| Catalog Number: | M5759 |
| CAS Number: | 6106-07-6 |
Physical and Chemical Properties
| Formula: | C15H20I4NNaO9 |
| Molecular Weight: | 888.93 |
| Form: | Solid |
| Solubility: | 28 mg/mL in DMSO |
| Storage: |
Powder -20°C 3 years ; 4°C 2 years In solvent -80°C 6 months ; -20°C 1 month |
| Chemical Structure: |  |
Analytical Data
| QC Standard: | >98% |
| H-NMR: | Consistent with structure |
Product Information
| Description: | L-thyroxine sodium salt pentahydrate (L-thyroxine sodium pentahydrate; Levothyroxine, both found to lower total and LDL cholesterol levels. L-Thyroxine sodium salt pentahydrate (Levothyroxine; T4) is a synthetic thyroid hormone used in the study of hypothyroidism. |
| Stability and Solubility Advice: | Information concerning product stability, particularly in solution, has rarely been reported and in most cases we can only offer a general guide. We recommend that stock solutions, once prepared, are stored aliquoted in tightly sealed vials and used within 1 month. Avoid repeated freeze and thaw cycles. Storage conditions for some special products should refer to their storage details. |