Levothyroxine Sodium / T4 CAS 51-48-9; 25416-65-3

01 Overview

Levothyroxine or L-thyroxine is a synthetic thyroid hormone that is chemically identical to thyroxine , which is naturally secreted by the follicular cells of the thyroid gland.

02 Details

Bulking Cycle Positive T4 / L-Thyroxine Legal Oral Steroids 51-48-9 Levothyroxine Sodium Powders


Quick Detail:


Product name Levothyroxine Sodium
Other name T4
CAS 51-48-9
MF C15H11I4NO4
MW; 776.87
Molecular structure Pharmaceutical T4 Levothyroxine Sodium Powder For Weight Loss CAS 51-48-9
Assay 99%
Appearance: White Powder
Usage Weight loss powders
Brand Wanglian




Levothyroxine or L-thyroxine is a synthetic thyroid hormone that is chemically identical to thyroxine , which is naturally secreted by the follicular cells of the thyroid gland. It is used to treat thyroid hormone deficiency, and occasionally to prevent the recurrence of thyroid cancer. Like its naturally secreted counterpart, levothyroxine is a chiral compound in the L-form. The related drug dextrothyroxine was used in the past as a treatment for hypercholesterolemia but was withdrawn due to cardiac side effects


Levothyroxine is typically used to treat hypothyroidism and is the treatment of choice for people with hypothyroidism,who often require lifelong thyroid hormone therapy.It may also be used to treat goiter via its ability to lower thyroid-stimulating hormone, a hormone that is considered goiter-inducing.Levothyroxine is also used as interventional therapy in people with nodular thyroid disease or thyroid cancer to suppress thyroid-stimulating hormone secretion.A subset of people with hypothyroidism treated with an appropriate dose of levothyroxine will describe continuing symptoms despite TSH levels in the normal range.[6] In these people, further laboratory and clinical evaluation is warranted as they may have another cause for their symptoms.Furthermore, it is important to review their medications and possible dietary supplements as several medications can affect thyroid hormone levels.




L-thyroxine as medication is identical to the L-thyroxine which is the major hormone made by the thyroid gland,L-thyroxine is the most commonly prescribed form of thyroid hormone replacement,Stable blood levels of thyroid hormone are achieved when L-thyroxine is taken at approximately the same time each day, ideally the first thing in the morning on an empty stomach.
Use of thyroid hormones to treat vague symptoms such as dry skin, fatigue, constipation, abnormalities of reproductive function, growth retardation, or obesity without laboratory confirmation of contributing hypothyroidism is inappropriate and may cause hyperthyroidism in euthyroid individuals.



Item Specification Result
Appearance An odorless, almost white or buff colored powder pass
Solubility 1,Very slightly soluble in water pass
2,slightly soluble in alcohol pass
3,practically insoluble in most other organic solvents pass
4,disolves in diluted aqueous sodium hydroxide solutions Pass
Identification a) Heat about 50 mg with a few drops of sulfuric acid in a porcelain crucible: violet vapors of iodine are evolved. pass
b)The retention time of the major peak is confirm to the RS pass
Loss on Drying Not more than 4.0% 0.46%
C=1 in 1M HCl/EtOH 1:4
+18 ~ +22o +20.9o
Assay(HPLC) Not less than 95.0% 99.18%
Levothyroxine sodium Not more than 5.0% 0.68%
Conclusion: Up to the Standard for Export



Company Introduction:

(1) High Quality:Wuhan Wang Lianshang Biotechnology Co., Ltd. is a steroids manufacturer with its own lab and factory.
The purity of our product is tested by our quality department before it is shipped to our clients. Mostly steroids are 99% purity and approved by SGS,CTI and ITS.

(2) Favorable Price:Our price meets international market performance and we give the best doiscounted price for our new customers and promotioned price for our regular customers.

(3) Safe Fast Delivery:After receiving your payment,we will have professional package team to arrange your parcel within 12 hours.We can guarantee every goods can be successfully deliveried

(4) Available Shipment Way:EMS,HongKong Post,DHL,TNT,UPS,FedEx,Registered Mail,Air Express,Sea Vessel etc

(5) After-Sale Service:We can offer you good service after you place an order.At the same time,we can offer you some homebrew recipe to make injection.More service is more available to you.


Order Enquiry

  • 8 + 92 =


Leave a Reply

Your email address will not be published.