4-Amino-6-chloro-2-(methylthio)pyrimidine

4-氨基-6-氯-2-甲硫基嘧啶

Also known as: 4-Amino-6-chloro-2-methylmercaptopyrimidine, 6-Chloro-2-(methylthio)pyrimidin-4-amine, 6-Chloro-2-methylsulfanylpyrimidin-4-amine, 6-Chloro-2-(methylsulfanyl)pyrimidin-4-amine, 6-Chloro-2-(methylsulfanyl)-4-pyrimidinamine, 6-Chloro-2-(methylsulfanyl)-4-pyrimidinylamine, 4-Pyrimidinamine, 6-chloro-2-(methylthio)-, U 8342, NSC 19859

4-Amino-6-chloro-2-(methylthio)pyrimidine (CAS 1005-38-5) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H6ClN3S and a molecular weight of 175.639 g/mol. It is also known as 4-Amino-6-chloro-2-methylmercaptopyrimidine, 6-Chloro-2-(methylthio)pyrimidin-4-amine and 6-Chloro-2-methylsulfanylpyrimidin-4-amine. Key properties include a melting point of 130-132 °C(lit.), a boiling point of 338.7±22.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 158.6±22.3 °C. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
1005-38-5
Jingsj CID
J-41998-1
Molecular Formula
C5H6ClN3S
Chinese Name
4-氨基-6-氯-2-甲硫基嘧啶
Molecular Weight
175.639 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point130-132 °C(lit.)
Boiling Point338.7±22.0 °C at 760 mmHg
Density1.5±0.1 g/cm3
Flash Point158.6±22.3 °C
Exact Mass174.997101
PSA77.10000
LogP2.18
Vapor Pressure0.0±0.7 mmHg at 25°C
Refractive Index1.639

GHS Safety & Compliance

IrritantSignal word: Warning
  • H315 — Causes skin irritation
  • H319 — Causes serious eye irritation
  • H335 — May cause respiratory irritation

Customs & Trade Information

HS Code2933599090
Summary2933599090. other compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of 4-Amino-6-chloro-2-(methylthio)pyrimidine?

The CAS number of 4-Amino-6-chloro-2-(methylthio)pyrimidine is 1005-38-5.

What are the molecular formula and molecular weight of 4-Amino-6-chloro-2-(methylthio)pyrimidine?

4-Amino-6-chloro-2-(methylthio)pyrimidine has molecular formula C5H6ClN3S and molecular weight 175.639 g/mol.

Is 4-Amino-6-chloro-2-(methylthio)pyrimidine hazardous?

4-Amino-6-chloro-2-(methylthio)pyrimidine has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.

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

Last updated:

How to cite: Jingsj. "4-Amino-6-chloro-2-(methylthio)pyrimidine (CAS 1005-38-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-41998-1 (accessed 2026-10-28).

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