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Levothyroxine sodium

BGC Id:160167592863
CAS No:55-03-8
Synonyms:sodium 4-o-(4-hydroxy-3,5-diiodophenyl)-3,5-diiodo-l-tyrosine ; 3-amino-4-(4-(4-oh-3,5-diiodophenoxy)-3,5-diiodophenyl))but.ac.na salt ; l-thyroxine sodium pentahydrate ; l-thyroxine sodium anhydrous ; l-thyroxinesodiumsaltb.p. ; levothyroxine sodium ; l-tyrosine,o-(4-hydroxy-3,5-diiodophenyl)-3,5-diiodo-, sodium salt (1:1) ; levothyroxine sodium ,t4 ; l-thyroxine sodium salt pentahydrate ; levothyroxine sdium
Molecular Formula:C15H10I4NNaO4
Molecular Weight:888.93
EINECS:200-221-4
Structural Formula

Verified providers in 2025

The following 9 notable providers have been checked and can be recommended.
Chemical-Suppliers
Sancai Industry
Appearance   Light yellow to buff-colored
Identification   Conform
Specific rotation   Between -5° and -6°
Water(loss on Drying)   <11.0%
>>more

Chemical-Suppliers
Leap Chem
Molecular Formula: C15H10I4NNaO4 Molecular Weight: 798.86

The last intensive check and update was carried out on 2025/12/15.

Identify

Synonyms:
sodium 4-o-(4-hydroxy-3,5-diiodophenyl)-3,5-diiodo-l-tyrosine ; 3-amino-4-(4-(4-oh-3,5-diiodophenoxy)-3,5-diiodophenyl))but.ac.na salt ; l-thyroxine sodium pentahydrate ; l-thyroxine sodium anhydrous ; l-thyroxinesodiumsaltb.p. ; levothyroxine sodium ; l-tyrosine,o-(4-hydroxy-3,5-diiodophenyl)-3,5-diiodo-, sodium salt (1:1) ; levothyroxine sodium ,t4 ; l-thyroxine sodium salt pentahydrate ; levothyroxine sdium
CAS:
55-03-8
EINECS:
200-221-4
Molecular Formula:
C15H10I4NNaO4
MDL:
MFCD00002596

Properties

Molecular Weight:
888.93 g·mol−1
Melting point:
207-210 (dec.)(lit.)
Solubility:
cell culture medium: 0.1 mg/mL
download Download Molfile for :
Thyroxine Sodium Salt

Suppliers

Guangzhou Topwork Chemical Co., Ltd.

Company type: Leading producer
Guangzhou Topwork Chemical Co.,Ltd. specialize in manufacturing corticosteroid and relative intermediate. We also provide contract reseach & custom manufacture services. Our strong API are: Algestone acetophenide,Chlorambucil,Demecarium Bromide, Desonide, Desoximetasone,Diflorasone, Diflorasone diacetate, Diflucortolone valerate, Difluprednate, Fludrocortisone acetate, Flumethasone,Fluorometholone, Fluorometholone acetate, 9-fluoroprednisolone acetate,Roflumalist, SelectFlu ...
Country: P.R.China   Phone: +86-13544492387   Telefax: +86-20-87317062

Simagchem Corporation

Company type: Bulk chemical producer
Country: P.R.China
Phone: +86 592 2680 277
Telefax: +86 592 2680 237

Sancai Industry Co.,Ltd.

Sancai Industry is involved in supplying of fine chemicals, food and nutrition,personal care, medical intermediate etc, We can also customize chemicals for our customers.Taking advantage of innovative technology and excellent talents and through over 15 years of development,We have stabled good relation with clients in and abroad. In order to be competitive on the market. We have established the global marketing network, independent research center, testing center, and key ...
Company type: Leading producer
Country: P.R.China
Phone: +86-531-88913079
Telefax: +86-531-88913079

H&Z Industry Co.,Ltd

H&Z Industry Co.,Ltd is a large reliable and professional manufacturer of chemical materials and pharmaceutical intermediate. With about 10 years experiences in this field, now we are a capable provider of customized product, and we can provide gram level to ton level of products. What we can give to customers: thoughtful services, high-quality products, competitive price, Looking forward building long-term cooperative relationships with our business partners.
Country: P.R.China   Phone: +86 13583185792   Telefax: +86 531 88905468

Finetech Industry Limited

Company type: Producer
Country: P.R.China
Phone: +86-27-8746 5837
Telefax: +86-27-8777 2287
...

Hangzhou Lingrui Chemical Co., Ltd.

Established in 2010, located in Hangzhou Qinglan science park, lingruichem is a technical company mainly focus on the Custom synthesis, manufacturing, sales of chemicals to various industries. In our R&D centre, we have a staff of skilled and experienced research chemists. This has enabled us to meet the special requirements of our customers and it has enabled us to provide quality products at competitive prices. Lingrui’s credo is committed to your reliable business partne ...
Company type: Producer
Country: P.R.China
Phone: +86-571-88092529
Telefax: +86-571-87334908

Xingrui Industry Co., Limited

Company type: Leading producer
Xingrui Industry CO., LTD. is a professional manufacturing enterprise integrating R&D, production and sales. The products involved fine chemicals, pharmaceutical intermediates, dye intermediates, cosmetic raw materials and so on. The company is ranked among the outstanding producers in the fine chemical industry. Xingrui Industry always strive to be the most reliable partner of our customers, and strive to build a customer-trusted, socially respected, world-class fine chemi ...
Country: P.R.China   Phone: +86-531-88980365   Telefax: +86-531-88980365

Xiamen Equation Chemical Co.,Ltd

Company type: Bulk chemical producer
Country: P.R.China
Phone: +86 592 6515854
Telefax: +86 592 6515854

Leap Chem Co., Ltd

LEAPChem, a specialized fine chemicals supplier for research, development and production. LEAPChem provides nearly 50,000 rare and innovative chemical products to support the evolving needs of our customers in research & bulk manufacturing activities. As a highly customer-oriented enterprise, we are committed to providing high-quality customer services and products to our global customers in a cost-effective and efficient manner. Our client list includes many major pharmac ...
Company type: Bulk and laboratory supplier
Country: P.R.China
Phone: +852-30606658

Safety Information

Hazard Classes:
6.1(a)
Hazardous Substances Data:
Non-Regulated Material ¹
Safety Codes:
22-24/25 (S)
WGK Germany:
3
RID / ADR:
2811
RTECS:
YP2833760
Storage temperature:
2-8°C

What other providers are available for CAS 55-03-8?

In addition to the providers presented here for Levothyroxine sodium with the CAS number 55-03-8, there are other 17 providers with slightly different product names available for this CAS number.

Innova Pharmactive Pvt. Ltd. +2 additional providers that we know from the past
Carbone Scientific Co., Ltd. | BIOZOL Diagnostica Vertrieb GmbH +8 additional providers that we know from the past
+1 additional providers that we know from the past
+2 additional providers that we know from the past




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