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 1999 · 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
In stock — same-day dispatch
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.
-
100 g — £30.90 per pack ex VAT · £37.08 inc. VAT
-
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
-
Health Hazard
GHS07
-
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
Safety Data Sheets (SDS)
We haven't published a Safety Data Sheet for this product yet. Ask us and we'll send you one.
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.
Quality certificates
Molekula Group is certified to ISO 9001:2015 (quality) and ISO 14001:2015 (environmental management), audited by a UKAS-accredited body. Both certificates are valid to 17 May 2028.
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.