2-(Methylthio)pyrimidine-4,6(1H,5H)-dione

4,6-二羟基-2-甲硫基嘧啶

Also known as: 4,6-Dihydroxy-2-(methylthio)pyrimidine, 4,6-Dihydroxy-2-methylmercaptopyrimidine, 2-Methylmercaptobarbituric acid, 2-Methylthio-4,6-pyrimidinediol, 2-(Methylsulfanyl)pyrimidine-4,6(1H,5H)-dione, 2-(Methylsulfanyl)-1H-pyrimidin-4,6-dione, S-Methylthiobarbituric acid, 4,6(1H,5H)-Pyrimidinedione, 2-(methylthio)-, 6-Hydroxy-2-(methylsulfanyl)-4(1H)-pyrimidinone

2-(Methylthio)pyrimidine-4,6(1H,5H)-dione (CAS 29639-68-7) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H6N2O2S and a molecular weight of 158.178 g/mol. It is also known as 4,6-Dihydroxy-2-(methylthio)pyrimidine, 4,6-Dihydroxy-2-methylmercaptopyrimidine and 2-Methylmercaptobarbituric acid. Key properties include a melting point of >300ºC, a boiling point of 404.5±25.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 198.5±23.2 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
29639-68-7
Jingsj CID
J-1500867-7
Molecular Formula
C5H6N2O2S
Chinese Name
4,6-二羟基-2-甲硫基嘧啶
Molecular Weight
158.178 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point>300ºC
Boiling Point404.5±25.0 °C at 760 mmHg
Density1.6±0.1 g/cm3
Flash Point198.5±23.2 °C

Frequently Asked Questions

What is the CAS number of 2-(Methylthio)pyrimidine-4,6(1H,5H)-dione?

The CAS number of 2-(Methylthio)pyrimidine-4,6(1H,5H)-dione is 29639-68-7.

What are the molecular formula and molecular weight of 2-(Methylthio)pyrimidine-4,6(1H,5H)-dione?

2-(Methylthio)pyrimidine-4,6(1H,5H)-dione has molecular formula C5H6N2O2S and molecular weight 158.178 g/mol.

Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "2-(Methylthio)pyrimidine-4,6(1H,5H)-dione (CAS 29639-68-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1500867-7 (accessed 2026-10-22).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.