What is the minimum order quantity (MOQ) for L-thyroxine?

The standard MOQ for L-thyroxine is 1 kg. For bulk orders, we offer competitive pricing with flexible quantities to meet your production needs. Custom packaging is available upon request.

What is the purity and specification of L-thyroxine?

Our L-thyroxine typically meets industry standards with a purity of ≥98% (HPLC) for CAS 98. We also supply USP/EP grade and custom specifications. COA (Certificate of Analysis) is provided with each batch.

What documentation is provided with L-thyroxine?

Each shipment includes COA, MSDS (Material Safety Data Sheet), and packing list. For regulatory compliance, we can also provide GMP documentation, NMR spectra, and HPLC charts upon request.

What are the payment terms for ordering L-thyroxine?

We accept T/T, L/C, PayPal, and Western Union. For first-time buyers, we recommend T/T 30% deposit with balance against copy of BL. Credit terms are available for repeat customers upon credit approval.

How is L-thyroxine packaged and shipped?

Standard packaging: 1 kg/aluminum foil bag, 25 kg/fiber drum with double PE bags inside. Shipping via DHL/FedEx/TNT (3-5 days door-to-door) or by air/sea freight for bulk orders. We also offer blind shipping to protect your supplier information.

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Home Products Pharmaceutical Intermediates 51-48-9 L-Thyroxine

51-48-9 L-Thyroxine

Product Item : 51-48-9 L-Thyroxine
Category: Pharmaceutical Intermediates
Purity:98%
Package:1kg 5kg 25kg
Powder White to Pale Brown
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Product Name:	L-Thyroxine
Synonyms:	3,5,3’,5’-tetraiodothyronine;beta-[(3,5-diiodo-4-hydroxyphenoxy)-3,5-diiodophenyl]alanine;l-3,5,3’,5’-tetraiodothyronine;l-t4;o-(4-hydroxy-3,5-diiodophenyl)-3,5-diiodo-l-tyrosin;β-((3,5-Diiodo-4-hydroxyphenoxy)-3,5-diiodophenyl)alanine;3,5,3',5'-TETRAIODO-L-THYRONINE;3,3',5,5'-TETRAIODO-L-THYRONIN
CAS:	51-48-9
MF:	C15H11I4NO4
MW:	776.87
EINECS:	200-101-1
Product Categories:	Heterocyclic Compounds;Amino Acids;Organics;Amino Acids & Derivatives;Intermediates & Fine Chemicals;Isotope Labeled Compounds;Pharmaceuticals;Aromatics;Isotope Labelled Compounds;SYNTHROID;Isolabel;Other APIs;Inhibitors;51-48-9
Mol File:	51-48-9.mol

L-Thyroxine Chemical Properties

Melting point	235 °C
alpha	-5 º (1N NaOH:EtOH 1:2)
density	2.4440 (estimate)
Fp	9℃
storage temp.	Keep in dark place,Inert atmosphere,2-8°C
solubility	Dissolves in 4M ammonium hydroxide in Methanol at 50mg/ml
pka	2.2(at 25℃)
form	Powder
Boiling point	576.3±50.0 °C(Predicted)
color	White to Pale Brown
Water Solubility	insoluble
Sensitive	Light Sensitive
Merck	9491
BRN	2228515