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4-Amino-6-chloropyrimidine

Also known as: 6-Chloro-4-pyrimidinamine, 6-Chloropyrimidin-4-amine, 6-Chloropyrimidine-4-amine, 4-Pyrimidinamine, 6-chloro-, NSC 42134

4-Amino-6-chloropyrimidine (CAS 5305-59-9) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C4H4ClN3 and a molecular weight of 129.548 g/mol. Key properties include a melting point of 215-216°C, a boiling point of 289.0±20.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 128.6±21.8 °C. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed, H315 — Causes skin irritation and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
5305-59-9
Jingsj CID
J-23467-3
Molecular Formula
C4H4ClN3
Molecular Weight
129.548 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point215-216°C
Boiling Point289.0±20.0 °C at 760 mmHg
Density1.4±0.1 g/cm3
Flash Point128.6±21.8 °C
Exact Mass129.009369
PSA51.80000
LogP0.84
Vapor Pressure0.0±0.6 mmHg at 25°C
Refractive Index1.618

GHS Safety & Compliance

IrritantSignal word: Warning
  • H302 — Harmful if swallowed
  • 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-chloropyrimidine?

The CAS number of 4-Amino-6-chloropyrimidine is 5305-59-9.

What are the molecular formula and molecular weight of 4-Amino-6-chloropyrimidine?

4-Amino-6-chloropyrimidine has molecular formula C4H4ClN3 and molecular weight 129.548 g/mol.

Is 4-Amino-6-chloropyrimidine hazardous?

4-Amino-6-chloropyrimidine has GHS signal word Warning and hazard statements H302 — Harmful if swallowed; H315 — Causes skin irritation; H319 — Causes serious eye irritation.

What are the upstream and downstream products of 4-Amino-6-chloropyrimidine?

For 4-Amino-6-chloropyrimidine, Upstream Products: 4,6-Dichloropyrimidine, 4-Amino-6-hydroxypyrimidine, 1-Butanol; Downstream Products: 6-Iodopyrimidin-4-amine, 4-Amino-6-phenylpyrimidine, methyl 6-aminopyrimidine-4-carboxylate.

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

Last updated:

How to cite: Jingsj. "4-Amino-6-chloropyrimidine (CAS 5305-59-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-23467-3 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.