6-Methyl-2-thiouracil

Name: 6-Methyl-2-thiouracil
Brand: Vaqora Chemicals
SKU: VQ-027205

About 6-Methyl-2-thiouracil

Vaqora Chemicals supplies 6-Methyl-2-thiouracil, an impurity of Propylthiouracil registered under CAS number 56-04-2. Formula C5H6N2OS, molecular weight 142.18 g/mol. Its systematic (IUPAC) name is 6-methyl-2-sulfanylidene-1H-pyrimidin-4-one. It is also known as Basethyrin or Prostrumyl.

The product is provided as a solid. Keep the vial tightly closed, protected from light and humidity, at the temperature stated on the Certificate of Analysis. The GHS classification uses the signal word “Warning”, so appropriate gloves, eye protection and ventilation are recommended.

Pharmaceutical QC and development laboratories use this impurity standard of Propylthiouracil to develop and validate HPLC methods, to set specification limits and to document impurity profiles in ANDA and DMF submissions. Buyers come mainly from pharmaceutical manufacturing and academic and industrial research.

Available in 10 mg, 25 mg, 50 mg and 100 mg packs, 6-Methyl-2-thiouracil is dispatched with a Certificate of Analysis (COA) to destinations worldwide.

Typical applications

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

Industries

Related to Propylthiouracil

View every impurity, metabolite and intermediate we list for Propylthiouracil.

Propylthiouracil impurities

Specifications & identifiers

Chemical identifiers
Product name	6-Methyl-2-thiouracil
Catalogue No.	VQ-027205
CAS Number	56-04-2
IUPAC name	6-methyl-2-sulfanylidene-1H-pyrimidin-4-one
Molecular formula	C₅H₆N₂OS
Molecular weight	142.18 g/mol
Exact mass	142.0201
Grade	Reference Standard
HSN code	38229090
InChIKey	HWGBHCRJGXAGEU-UHFFFAOYSA-N
SMILES	CC1=CC(=O)NC(=S)N1
PubChem CID	667493

Physical properties
Physical form	Solid
LogP (XLogP3)	-0.2
H-bond donors / acceptors	2 / 2
TPSA	73.2 Å²
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

Safety & hazard information (GHS)

Harmful / irritant

Health hazard

Signal word: Warning

Hazard statements

H302Harmful if swallowed
H351Suspected of causing cancer

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

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of 6-Methyl-2-thiouracil?

The CAS Registry Number of 6-Methyl-2-thiouracil is 56-04-2. It is also known as Basethyrin, Prostrumyl, Thiothymin.

What is the molecular formula and molecular weight of 6-Methyl-2-thiouracil?

6-Methyl-2-thiouracil has the molecular formula C5H6N2OS and a molecular weight of 142.18 g/mol. Its IUPAC name is 6-methyl-2-sulfanylidene-1H-pyrimidin-4-one.

What is 6-Methyl-2-thiouracil used for?

6-Methyl-2-thiouracil is supplied as a characterised reference material related to Propylthiouracil. It is used for analytical method development and validation (AMV), impurity profiling, stability studies and quality control, and in ANDA/DMF regulatory filings.

Which grade and pack sizes of 6-Methyl-2-thiouracil can I order?

We supply 6-Methyl-2-thiouracil in Reference Standard grade, in 10 mg, 25 mg, 50 mg, 100 mg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with 6-Methyl-2-thiouracil?

Yes. Every lot of 6-Methyl-2-thiouracil is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can 6-Methyl-2-thiouracil be shipped internationally?

Yes. 6-Methyl-2-thiouracil is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.