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Details
Levothyroxine
Alias:L-Thyroxine,3,3',5,5'-Tetraiodo-L-thyronine,3-[4-(4-Hydroxy-3,5-diiodophenoxy)-3,5-diiodophenyl]-L-alanine
Purity : 99%min
CAS Registry Number: 51-48-9
Einecs No: 200-101-1
MF: C15H11I4NO4
MW: 776.87
Appearance :White Crystalline Solid
Standard : USP30
Grade : Pharmaceutical Grade
Storage: Shading, confined preserva
Usage:One of the thyroid hormones involved in the maintenance of metabolic homeostasis. Synthesized and stored as amino acid residues of thyroglobulin, the major protein component of the thyroid follicular colloid. Synthesis and secretion are regulated by the people.
COA:
Product name | L-Thyroxine | |
Appearance | White crystalline powder | |
Assay(*) | 98~101.0% | 99.3% |
Identification | By UV, To match with working standard | Complies |
Related Substances | Not more than the reference solution (0.05%) | Complies |
Heavy metals | ≤10ppm | 10ppm |
Loss on drying | <0.5% | 0.15% |
Resiue on ignition | ≤0.1% | 0.05% |
Melting | 235°C | Complies |
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FAQ
Q Can I get some samples?
A Yes, we can supply the free samples, but the shipping cost be paid by our customers.
Q How to start orders or make payment?
A Proforma invoice will be sent to you first after confirmation of order, enclosed our bank information.
Payment by T/T, Western Union, Bitcoin and Alibaba
Q How to confirm the Product Quality before placing orders?
A You can get free samples for some products, you only need to pay the shipping cost or arrange a courier to us and take the sample.
Q Do I have to clear customs by myself?
A No, the goods delivered to your address directly, and no real chemical name on your package. we have more than 10 years shipping experience.
How to make an order?
1. Please tell us the quantity you need and proviede your vaild address information.
2. Please confirm your order and deposit, we accpet T/T, Western Union and bitcoin.Alibaba
3. Photos of parcel would be offered before we sent out
4. The tracking number will be sent to you after you got photos.(door to door)
5. Any update of tracking number we will tell you at first time. and you can check it on website too.
6.The parcel delivered, 7*24hours after-sale service