Molekula
4(6)-Methyl-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
4(6)-Methyl-2-thiouracil is a heterocyclic compound used in organic synthesis and as a biochemical research reagent. It serves as an intermediate in the production of pharmaceuticals and agrochemicals. Available with a CAS number of 56-04-2, its molecular formula is C5H6N2OS and molecular weight is 142.18 g/mol. It should be stored at ambient temperature and is classified with a warning signal word. Molekula supplies 4(6)-Methyl-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 — £30.90 per pack ex VAT · £37.08 inc. VAT
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500 g — £116.90 per pack ex VAT · £140.28 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 | White crystal powder |
| Melting Point | 328 - 333℃ |
| Loss on Drying | ≤0.5% |
| Assay | ≥99.0% |
| Residue on Ignition | ≤0.1% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Crystals |
| Odour | Odorless |
Source: PubChem CID 667493 (HSDB)
Identification
| Property | Value |
|---|---|
| SKU | 45743126 |
| CAS Number | 56-04-2 |
| IUPAC Name | 6-methyl-2-sulfanylidene-1H-pyrimidin-4-one |
| EC Number | 200-252-3 |
| Molecular Formula | C5H6N2OS |
| Molecular Weight | 142.18 |
| Exact Mass | 142.0201 |
| SMILES | CC1=CC(=O)NC(=S)N1 |
| InChIKey | HWGBHCRJGXAGEU-UHFFFAOYSA-N |
| InChI | InChI=1S/C5H6N2OS/c1-3-2-4(8)7-5(9)6-3/h2H,1H3,(H2,6,7,8,9) |
| PubChem CID | 667493 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2933599500 |
| Tariff Code | 2933599590 |
Safety & GHS
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Health Hazard
GHS07
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Serious Health Hazard
GHS08
Hazard statements
- H302 Harmful if swallowed
- H317 May cause an allergic skin reaction
- H351 Suspected of causing cancer
Precautionary statements
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician
- P302+352 IF ON SKIN: Wash with soap and water
- P308+313 IF exposed or concerned: Get medical advice/attention
Documents
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
- 6-Methyl-2-thiouracil
- Alkiron
- Basethyrin
- Metacil
- Methiocil
- methylthiouracil
- Prostrumyl
- Thimecil
- Thiomecil
- Thiothymin
Frequently asked questions
What is 4(6)-Methyl-2-thiouracil used for?
It is primarily used as a research chemical in pharmaceutical and biochemical studies, particularly in the development of antithyroid agents and as a building block in organic synthesis.
What is the chemical formula and molecular weight of 4(6)-Methyl-2-thiouracil?
The formula is C5H6N2OS with a molecular weight of 142.18 g/mol.
How should 4(6)-Methyl-2-thiouracil be stored?
It should be stored at ambient temperature, protected from light and moisture.
What grade is available for 4(6)-Methyl-2-thiouracil?
It is available in research grade, suitable for laboratory use.
Can Molekula supply 4(6)-Methyl-2-thiouracil in bulk?
Yes, Molekula can supply 4(6)-Methyl-2-thiouracil in bulk quantities—please contact our sales team for pricing and availability.
What documentation comes with an order of 4(6)-Methyl-2-thiouracil?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS), compliant with regulatory standards.
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.