C5H6N2OS
142.18 g/mol
Research ReagentDanger
2-(Methylthio)-1H-pyrimidin-4-one
CAS5751-20-2EC227-274-6
Category
Research Reagent
Compound Class
Heterocycle
Primary Use
Research Compound
2-(Methylthio)-1H-pyrimidin-4-one, also known as 2-methylthiouracil, is an aryl sulfide compound commonly used as a research reagent in pyrimidine chemistry. It features a heterocyclic aromatic ring and is characterized by a methylthio substituent on the pyrimidine core.
Research reagent for pyrimidine chemistry
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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Related Compounds
ReferenceSame Category
Ethyl thiophene-3-carboxylate
CAS5751-80-4
research compound
ReferenceSame Category
3,6-Dihydroxy-4,5-dimethylpyridazine
CAS5754-17-6
research compound
ReferenceSame Category
3,6-Dihydroxy-4-methylpyridazine
CAS5754-18-7
research compound
ReferenceSame Category
[D-Asn5]-Oxytocin
CAS5754-53-0
research compound
Safety Reference
Danger
H302Harmful if swallowed
H315Causes skin irritation
H318Causes serious eye damage
H335May cause respiratory irritation
Customs Tariff Classification
The international HS code for 2-(Methylthio)-1H-pyrimidin-4-one (CAS 5751-20-2) is 2933.59.
HS code (international, 6-digit)
2933.59
EU CN code (8-digit)
2933 59 95
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
2-methylsulfanyl-1H-pyrimidin-6-one
InChIKey
UYHSQVMHSFXUOA-UHFFFAOYSA-N
SMILES
CSC1=NC=CC(=O)N1
Synonyms (36)
- 2-(Methylthio)-4-pyrimidinone
- 2-(methylthio)pyrimidin-4-ol
- 2-Methylthio-4-pyrimidinol
- 2-Methylthio-4-pyrimidone
- 2-Methylthiopyrimidon(4)
- 2-Methylthiouracil
- 2-methylthio-3H-pyrimid-4-one
- 2-methylthiopyrimidin-4-one
- Mizolastine Impurity 3
- S-Methyl-2-thiouracil
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