MOQ is 10 grams
10g is $ 60
100g is $ 4700
1kg is $ 4500
Levothyroxine
Alias: T4 ; tetraiodothyronine
CAS NO: 51-48-9
Einecs No: 200-101-1
MF: C15H11I4NO4
MW: 776.87
Melting Point：235℃
Purity: 98.0%
Appearance: White crystal. This product soluble in alkali solution, insoluble in water, ethanol and ether.
Specifications: COA
| Test | Specifications | Result |
| Appearance | Almost white crystalline powder | white crystalline powder |
| Identification (1)iodine (2)color | 1)flame decomposes andlibetates iodine vapors 2)add solution,a pink colour peoduced | 1)Pass 2)Pass |
| Solubility | 1)Very Slightly Soluble in Water 2)Soluble in Solutions of Alkali hydeoxides and in hot solutions of Alkli Carbonates 3)Slightly Soluble in Alcohol 4)Insoluble in Acetone,Chloroform and in Ether | 1)Pass 2)Pass 3)Pass 4)Pass |
| Specific optical rotation | -5°~-6° (Sol 3.0% mixture from NaOH 1N/Ethanol 1:2) | -5.8° |
| Loss on drying | ≤11.0% | 9.60% |
| Liothyronine | ≤2.0% | 0.8% |
| Iodide | ≤0.08% | 0.06% |
| Assay | 97.0%~103.0% | 98.6% |
| Conclusion | Conforms to USP30 | |
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