6-Methyl-2-thiouracil

Name: 6-Methyl-2-thiouracil
Brand: Zemixal
SKU: ZX-026125

Reference StandardAvailable on request

Order 6-Methyl-2-thiouracil (CAS 56-04-2) online at Zemixal. Request a quote with price, lead time and documents. Packs from 10 mg.

Pack sizes

6-Methyl-2-thiouracil chemical structure

CAS number56-04-2

FormulaC₅H₆N₂OS

Molar mass142.18 g/mol

Physical formSolid

HS code38229090

InChIKeyHWGBHCRJGXAGEU-UHFFFAOYSA-N

IUPAC name6-methyl-2-sulfanylidene-1H-pyrimidin-4-one

About 6-Methyl-2-thiouracil

6-Methyl-2-thiouracil belongs to the Propylthiouracil reference-standard family in the Zemixal catalogue. Identity at a glance (Reference Standard): CAS 56-04-2, formula C5H6N2OS and molar mass 142.18 g/mol. It is handled as a solid.

Common uses in the lab and plant

Analytical method development
Method validation (AMV)
QC release testing
ANDA / DMF filings

Handling and storage

Hazard communication follows GHS (Warning: H302 and H351). Our SDS lists exposure controls and first-aid measures.

Available as 10 mg, 25 mg, 50 mg and 100 mg. Larger or split packs can be arranged. You receive a certificate of analysis with characterisation data with each order. Send an enquiry through the quote panel and you get a formal offer with Incoterms and delivery time.

Reference standards for Propylthiouracil

See every impurity, metabolite and related compound we list for this API.

Propylthiouracil standards

Typical uses

Analytical method development
Method validation (AMV)
QC release testing
ANDA / DMF filings

Applications

Pharmaceutical Manufacturing and QC Research Labs and Universities

Specifications and identifiers

Specifications of 6-Methyl-2-thiouracil
Product name	6-Methyl-2-thiouracil
Catalogue number	ZX-026125
CAS number	56-04-2
IUPAC name	6-methyl-2-sulfanylidene-1H-pyrimidin-4-one
Molecular formula	C₅H₆N₂OS
Molar mass	142.18 g/mol
Exact mass	142.0201
Grade	Reference Standard
Physical form	Solid
XLogP3	-0.2
H-bond donors / acceptors	2 / 2
Topological polar surface area	73.2 Å²
HS code	38229090
InChIKey	HWGBHCRJGXAGEU-UHFFFAOYSA-N
SMILES	CC1=CC(=O)NC(=S)N1
PubChem CID	667493
Synonyms	Basethyrin, Prostrumyl, Thiothymin, 2-Thio-6-methyluracil, Thyreostat I, Thioryl, Thiuryl, Tiorale M, 6-Methylthiouracil, 4-Methyl-2-thiouracil, 4(1H)-Pyrimidinone, 2,3-dihydro-6-methyl-2-thioxo-, 6-Thio-4-methyluracil

Lot values are stated on the batch certificate of analysis. Ask for a typical COA with your quotation.

Safety and GHS hazards

Irritant or harmful

Health hazard

Signal word Warning

H302Harmful if swallowed
H351Suspected of causing cancer

Precautionary statements P203, P264, P270, P280, P301 + P317, P318, P330, P405, P501

Classification summarised from public GHS notifications. It can vary with grade and concentration, so always follow the SDS supplied with your lot.

Pack sizes

Pack sizes of 6-Methyl-2-thiouracil
10 mg	Quoted on request
25 mg	Quoted on request
50 mg	Quoted on request
100 mg	Quoted on request

Need a different size? Bulk drums and custom packing are quoted on request through the quote form on this page.

Questions about 6-Methyl-2-thiouracil

Which CAS number identifies 6-Methyl-2-thiouracil?

6-Methyl-2-thiouracil is registered under CAS 56-04-2. You may also see it listed as Basethyrin, Prostrumyl, Thiothymin. Our catalogue number for this item is ZX-026125.

What are the formula and molar mass of 6-Methyl-2-thiouracil?

For 6-Methyl-2-thiouracil, its formula is C5H6N2OS and its molar mass is 142.18 g/mol. The systematic (IUPAC) name is 6-methyl-2-sulfanylidene-1H-pyrimidin-4-one. InChIKey HWGBHCRJGXAGEU-UHFFFAOYSA-N lets you match it in any structure database.

How is 6-Methyl-2-thiouracil used in pharmaceutical QC?

6-Methyl-2-thiouracil is a characterised reference material linked to Propylthiouracil. Laboratories use it to identify and quantify this impurity during method development and validation, stability work, batch release testing and regulatory submissions.

What grade and pack sizes are available for 6-Methyl-2-thiouracil?

This listing is Reference Standard grade. Standard packs are 10 mg, 25 mg, 50 mg, 100 mg. Larger quantities and custom packing can be quoted on request.

Which documents come with 6-Methyl-2-thiouracil?

Each lot ships with a batch certificate of analysis and a 16-section GHS safety data sheet. A typical COA or specification sheet can be shared with the quotation before you order.

Can Zemixal ship 6-Methyl-2-thiouracil to my country?

Yes. Because 6-Methyl-2-thiouracil is classed as hazardous, it travels in UN-approved packaging as dangerous goods under IATA or IMDG rules, with the export paperwork your broker needs.

More Propylthiouracil standards

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