Levothyroxine sodium / T4 CAS 55-03-8

Levothyroxine sodium

Product Details:

Place of Origin:CHINA
Brand Name:Hezhong
Model Number:Levothyroxine sodium / T4 CAS 55-03-8

Payment & Shipping Terms:

Minimum Order Quantity:10g
Packaging Details:foil bag or as required
Delivery Time:3-5 work days
Payment Terms:T/T, Western Union, MoneyGram, Bitcoin
Supply Ability:100kg/month
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Local Anesthetic Drugs Articaine Hydrochloride / Articaine HCL CAS 23964-57-0


General information:

Levothyroxine sodium; L-Thyroxine Sodium (Steroids) 
Aliases: L-Thyroxine sodium salt; Sodium 4-o-(4-hydroxy-3, 5-diiodophenyl)-3, 5-diiodo-l-tyrosine; Sodium (2S)-2-amino-3-[4-(4-hydroxy-3, 5-diiodophenoxy)-3, 5-diiodophenyl]propanoate hydrate (1: 1: 5); Sodium 2-amino-3-[4-(4-hydroxy-3, 5-diiodophenoxy)-3, 5-diiodophenyl]propanoate; Tyrosine, O-(4-hydroxy-3, 5-diiodophenyl)-3, 5-diiodo-, sodium salt (1: 1) 
CAS: 55-03-8 
Appearance: Almost whtie powder 
EINECS: 200-221-4 
MF: C15H11I4NNaO4 
MW: 799.8592 



Appearance: White crystals, crystalline powder 
Assay: 99.0 - 100.5% 
Specific Rotation: -0.10 o --- +0.10 o 
Residue on ignition: 0.10% max 
Water-insoluble substance: 0.1% max 
Fumaric Acid: 1.0% max 
Maleic Acid: 0.05% max 
Heavy metals(as Pb): 10 ppm max 
Arsenic(As): 4 ppm max 
Boiling Point: 576.3 deg; C at 760 mmHg 
Melting Point: 207-210 (DEC. )(lit. ) 
Flash Point: 302.3 deg; C 
Storage Temperature: 2-8 deg; C 
Solubility: Cell culture medium: 0.1 mg/mL in water 
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 pituitary hormone (TSH). Deiodinated in peripheral tissues to the active metabolite, liothyronine. The D-form has very little activity as a thyroid hormone, but has been used to treat hyperlipidemia. 


T4 is PRO-hormone, which your body converts into T3 at necessary rate only and thus it could be considered as much milder and safer drug than T3. 

Levothyroxine sodium is an excellent fat burner since your metabolism is greatly increased while being on it. You can afford to be a little sloppier on pre-contest dieting since it will still burn fat when you are taking in a lot of calories since your metabolism is going haywire. 



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



Levothyroxine is widely used by bodybuilders and fitness addicts on pre-competition cycle in order to get relief, also used by overweighed people to reduce weight. It increases metabolism and produces general stimulating effects. However, this substance should be used wisely. 
Liothyronine Sodium is a synthetic variant of the human body's own thyroid hormone. Indicated as a sympathicolytic and mydriatic. It may have activity as an aphrodisiac. It is suitable for various causes of hypothyroidism.

Levothyroxine for systemic administration is available as an oral tablet, an intramuscular injection and as a solution for intravenous infusion. Furthermore, levothyroxine is available as both brand-name and generic products. While the United States Food and Drug Administration (FDA) approved the use of generic levothyroxine for brand-name levothyroxine in 2004, the decision was met with disagreement by several medical associations.
Side effects: this medication should not be used for weight loss. Normal doses of this medication will not work for weight loss and large doses of this medication may cause serious, possibly fatal side effects, especially when taken with diet pills.


1. Method of Analysis for testing our materials are validated to give the re-producible results
2. All the analytical test procedures and manufacturing procedures are well documented and revision is undertaken as per specified protocol.
3. Trend analysis of purified water and final products are maintained.
4. Stability study is a very important area of quality assuance.
5. Paid orders are processed and despatched the same day and delivered within 5-8 working days worldwide.
6. For your convenience, we use discreet packaging and orders are delivered by post and our delivery success rate is 98%.
7. Should you not receive your order for any reason after 20 working days, please contact us where we will be able to assist you locating your order and if it appears tobe lost in the post, we then will then re-send you a replacement immediately.
Packaging and delivery:

1. Mass stock, to make sure delivery promptly every day when the payment is done.
2. Having been engaged in this field for years, we have sophisticated and professional logistics department, which can guarantee safe and speedy delivery.
3. Well-trained and disciplined packing team which is professional enough to provide you a safe package. It also avoid a lot of emergency happen during the delivery so that high customs pass is guaranteed. Unique ways to ship 10grams to 20 kilograms powders(or 100ml to 30 Liter liquids) at one time to your destination.
4. Packing pictures and tacking code are provided within 12 hours as soon as receiving the payment. Updated tracking information will be provided every other day just for you can hold a palm of your package.
5. Perfect after-sale service: Any questions or problems happened after receiving the product, please feel free to contact us. Problems would be solved immediately.

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