6-Chloropurine

Also known as: 6-Chloro-9H-purine, 6-Chloro-1H-purine, 6-CP, 6-Chlorpurine, 1H-Purine, 6-chloro-, 9H-Purine, 6-chloro-, 7H-Purine, 6-chloro-

6-Chloropurine (CAS 87-42-3) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H3ClN4 and a molecular weight of 154.557 g/mol. Key properties include a melting point of >300 °C (dec.)(lit.), a boiling point of 449.6±25.0 °C at 760 mmHg, a density of 1.7±0.1 g/cm3 and a flash point of 258.2±8.8 °C. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed. No supplier offers are currently listed; request a quote. Record last updated Nov 3, 2026.

CAS No.: 87-42-3
Jingsj CID: J-35715-3
Molecular Formula: C₅H₃ClN₄
Molecular Weight: 154.557 g/mol
Category: Pharma Intermediates
Last updated: 11/3/2026

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Physicochemical Properties

Melting Point	>300 °C (dec.)(lit.)
Boiling Point	449.6±25.0 °C at 760 mmHg
Density	1.7±0.1 g/cm3
Flash Point	258.2±8.8 °C
Exact Mass	154.004623
PSA	54.46000
LogP	0.13
Vapor Pressure	0.0±1.1 mmHg at 25°C
Refractive Index	1.740
Additional Property	5 g/L

GHS Safety & Compliance

IrritantSignal word: Warning

H302 — Harmful if swallowed

Activity & Biological Data

Additional Information	[1]. Hwang IY, et al. Detection and mechanisms of formation of S-(6-purinyl)glutathione and 6-mercaptopurine in rats given 6-chloropurine. J Pharmacol Exp Ther. 1993 Jan;264(1):41-6. [2]. Sartorelli AC, et al. Comparative studies on the in vivo action of 6-chloropurine, 6-chloropurine ribonucleoside, and 6-chloro-9-ethylpurine on sarcoma 180 ascites cells. J Pharmacol Exp Ther. 1961 Oct;134:123-8.

Additional Information

[1]. Hwang IY, et al. Detection and mechanisms of formation of S-(6-purinyl)glutathione and 6-mercaptopurine in rats given 6-chloropurine. J Pharmacol Exp Ther. 1993 Jan;264(1):41-6. [2]. Sartorelli AC, et al. Comparative studies on the in vivo action of 6-chloropurine, 6-chloropurine ribonucleoside, and 6-chloro-9-ethylpurine on sarcoma 180 ascites cells. J Pharmacol Exp Ther. 1961 Oct;134:123-8.

Customs & Trade Information

HS Code	2933990090
Summary	2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. 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 6-Chloropurine?

The CAS number of 6-Chloropurine is 87-42-3.

What are the molecular formula and molecular weight of 6-Chloropurine?

6-Chloropurine has molecular formula C5H3ClN4 and molecular weight 154.557 g/mol.

Is 6-Chloropurine hazardous?

6-Chloropurine has GHS signal word Warning and hazard statements H302 — Harmful if swallowed.

What are the upstream and downstream products of 6-Chloropurine?

For 6-Chloropurine, Upstream Products: Hypoxanthine, Xanthine, 6-chloro-9-(2-deoxy-β-D-erythro-pentofuranosyl)-9H-purine; Downstream Products: 6-(Methylthio)purine, Methoxyamine hydrochloride, 9H-Purine, 6-chloro-9-(2,3,5-tri-O-acetyl-β-D-ribofuranosyl)-.

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

Last updated: 11/3/2026

How to cite: Jingsj. "6-Chloropurine (CAS 87-42-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-35715-3 (accessed 2026-11-09).

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