Molekula
2-Thiouracil
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
2-Thiouracil is a heterocyclic organic compound used in pharmaceutical research and as an intermediate in the synthesis of nucleoside analogs. It also serves as a chemical intermediate in the manufacture of iothiouracil sodium and is used in veterinary medicines. It appears as a white to pale yellow crystalline powder. CAS: 141-90-2, Molecular Formula: C4H4N2OS, Molecular Weight: 128.15 g/mol. Store at ambient temperature. Signal word: Warning. Molekula supplies 2-Thiouracil 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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100 g — £37.30 per pack ex VAT · £44.76 inc. VAT
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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 | White to off-white powder |
| Heavy metals | ≤ 25ppm |
| Identification | Conforms to reference |
| Loss on Drying | ≤ 0.5% |
| Assay | ≥ 99.0% |
| Residue on Ignition | ≤ 0.5% |
| Any other individual impurity | ≤ 0.5% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Odour | Odorless |
Source: PubChem CID 1269845 (HSDB)
Identification
| Property | Value |
|---|---|
| SKU | 44036154 |
| CAS Number | 141-90-2 |
| IUPAC Name | 2-sulfanylidene-1H-pyrimidin-4-one |
| EC Number | 205-508-8 |
| Molecular Formula | C4H4N2OS |
| Molecular Weight | 128.15 |
| Exact Mass | 128.0044 |
| SMILES | C1=CNC(=S)NC1=O |
| InChIKey | ZEMGGZBWXRYJHK-UHFFFAOYSA-N |
| InChI | InChI=1S/C4H4N2OS/c7-3-1-2-5-4(8)6-3/h1-2H,(H2,5,6,7,8) |
| PubChem CID | 1269845 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 29335995 |
| Tariff Code | 2933599590 |
Safety & GHS
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Serious Health Hazard
GHS08
Hazard statements
- H303 May be harmful if swallowed
- H351 Suspected of causing cancer
- H401 Toxic to aquatic life
Precautionary statements
- P201 Obtain special instructions before use
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P273 Avoid release to the environment
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P308+313 IF exposed or concerned: Get medical advice/attention
- P501 Dispose of contents/container to an approved waste disposal plant
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
- 2-Mercapto-4-hydroxypyrimidine
- 2-Mercapto-4-pyrimidone
- 2-thioxo-2,3-dihydropyrimidin-4(1H)-one
- 4(1H)-Pyrimidinone, 2,3-dihydro-2-thioxo-
- 6-Thiouracil
- Antagothyroid
- Antagothyroil
- Deracil
- Nobilen
- Thiouracil
Frequently asked questions
What is 2-Thiouracil used for?
2-Thiouracil is primarily used as a chemical intermediate in the synthesis of pharmaceuticals and agrochemicals, and as a reagent in organic synthesis.
What is the chemical formula and molecular weight of 2-Thiouracil?
The chemical formula is C4H4N2OS and the molecular weight is 128.15 g/mol.
How should 2-Thiouracil be stored?
2-Thiouracil should be stored at ambient temperature, protected from moisture and light.
What grade of 2-Thiouracil is available?
Molekula supplies 2-Thiouracil in research grade.
Can Molekula supply 2-Thiouracil in bulk?
Yes, Molekula can supply 2-Thiouracil in bulk quantities—please contact our sales team for pricing and availability.
What documentation comes with a 2-Thiouracil 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.