Molekula
D-Thyroxine
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
D-Thyroxine is a synthetic form of the thyroid hormone thyroxine, used in research and clinical studies related to thyroid function and metabolism. It is a white to off-white crystalline powder with the molecular formula C15H11I4NO4 and a molecular weight of 776.87 g/mol. It is classified with a warning signal word due to its potent biological activity. Store at ambient temperature. Molekula supplies D-Thyroxine from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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25 mg — £143.90 per pack ex VAT · £172.68 inc. VAT
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | off-white or light yellow powder |
| Water | <11.0% |
| Specific rotation | -16.5 to -20.5 |
| pH | 5 - 6 |
| Iodides | <0.08% |
| D-Levothyroxine | 97 - 103% |
| D-Liothyronine | <2.0% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Melting Point | 235 - 236 °C |
Source: PubChem CID 8730 (Human Metabolome Database (HMDB))
Identification
| Property | Value |
|---|---|
| SKU | 83385561 |
| CAS Number | 51-49-0 |
| IUPAC Name | (2R)-2-amino-3-[4-(4-hydroxy-3,5-diiodophenoxy)-3,5-diiodophenyl]propanoic acid |
| EC Number | 200-102-7 |
| Molecular Formula | C15H11I4NO4 |
| Molecular Weight | 776.87 |
| Exact Mass | 776.6867 |
| SMILES | C1=C(C=C(C(=C1I)OC2=CC(=C(C(=C2)I)O)I)I)C[C@H](C(=O)O)N |
| InChIKey | XUIIKFGFIJCVMT-GFCCVEGCSA-N |
| InChI | InChI=1S/C15H11I4NO4/c16-8-4-7(5-9(17)13(8)21)24-14-10(18)1-6(2-11(14)19)3-12(20)15(22)23/h1-2,4-5,12,21H,3,20H2,(H,22,23)/t12-/m1/s1 |
| PubChem CID | 8730 |
| REACH Code | Y110 |
| HTS Code | 2937.90.9000 |
| Tariff Code | 2937900000 |
Safety & GHS
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Health Hazard
GHS07
Hazard statements
- H302 + H312 + H332 Harmful if swallowed, in contact with skin or if inhaled
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H335 May cause respiratory irritation
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P264 Wash thoroughly after handling
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+312 IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell
- P302+352 IF ON SKIN: Wash with soap and water
- P304+341 IF INHALED: If breathing is difficult, remove victim to fresh air and keep at rest in a position comfortable for breathing
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- (2R)-2-amino-3-[4-(4-hydroxy-3,5-diiodophenoxy)-3,5-diiodophenyl]propanoic acid
- (R)-2-Amino-3-(4-(4-hydroxy-3,5-diiodophenoxy)-3,5-diiodophenyl)propanoic acid
- Biotirmone
- Choloxin
- D-T4
- D-T4; D-Thyroxine
- D-Tyrosine, O-(4-hydroxy-3,5-diiodophenyl)-3,5-diiodo-
- Dextrothyroxine
- Dextrothyroxinum
- O-(4-hydroxy-3,5-diiodophenyl)-3,5-diiodo-D-tyrosine
Frequently asked questions
What is D-Thyroxine used for?
D-Thyroxine is primarily used in research and pharmaceutical applications, particularly in studies related to thyroid hormone activity and metabolism.
What is the chemical formula and molecular weight of D-Thyroxine?
The formula is C15H11I4NO4 with a molecular weight of 776.87 g/mol.
How should D-Thyroxine be stored?
It should be stored at ambient temperature.
What grade of D-Thyroxine is available?
Molekula supplies D-Thyroxine in research grade, suitable for laboratory use.
Can Molekula supply D-Thyroxine in bulk?
Yes, Molekula can provide D-Thyroxine in bulk quantities—please contact our sales team for pricing and availability.
What documentation comes with a D-Thyroxine order?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS) with the shipment.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.