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Purine

Also known as: 1,3-Diazolo[4,5-d]-1,3-diazine, 1H-Purine, 3,5,7-Triazaindole, 6H-Imidazo[4,5-d]pyrimidine, 7H-Purine, 9H-PURINE, 9H-purine, EINECS 204-421-2, Imidazo(4,5-d)pyrimidine, Imidazo[4,5-d]pyrimidine, Isopurine, MFCD00079221, NSC 753, X 128, b-Purine, beta-Purine, imidazopyrimidine, {6H-Imidazo[4,5-d]pyrimidine}, {Imidazo[4,5-d]pyrimidine}, β-Purine

Purine (CAS 120-73-0) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H4N4 and a molecular weight of 120.112 g/mol. Key properties include a melting point of 214-217 °C(lit.), a boiling point of 424ºC at 760mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 225.4ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
120-73-0
Jingsj CID
J-26439-4
Molecular Formula
C5H4N4
Molecular Weight
120.112 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point214-217 °C(lit.)
Boiling Point424ºC at 760mmHg
Density1.5±0.1 g/cm3
Flash Point225.4ºC
Exact Mass120.043594
PSA54.46000
LogP-0.37
Vapor Pressure0.0976mmHg at 25°C
Refractive Index1.738
Storage Conditions2-8°C
Additional Property400 g/L (20 ºC)

Customs & Trade Information

HS Code2933990090
Summary2933990090. 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 Purine?

The CAS number of Purine is 120-73-0.

What are the molecular formula and molecular weight of Purine?

Purine has molecular formula C5H4N4 and molecular weight 120.112 g/mol.

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

Last updated:

How to cite: Jingsj. "Purine (CAS 120-73-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-26439-4 (accessed 2026-11-06).

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