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2-Aminopurine

Also known as: 9H-Purin-2-amine, 1H-Purin-2-amine, iso-Adenine, 2-AP, 2-amino-purin, SQ 22,451

2-Aminopurine (CAS 452-06-2) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H5N5 and a molecular weight of 135.127 g/mol. Key properties include a melting point of 280-282 °C(lit.), a boiling point of 328.2±25.0 °C at 760 mmHg, a density of 1.9±0.1 g/cm3 and a flash point of 152.3±23.2 °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 Aug 21, 2026.

CAS No.
452-06-2
Jingsj CID
J-1127787-3
Molecular Formula
C5H5N5
Molecular Weight
135.127 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point280-282 °C(lit.)
Boiling Point328.2±25.0 °C at 760 mmHg
Density1.9±0.1 g/cm3
Flash Point152.3±23.2 °C
Exact Mass135.054489
PSA80.48000
LogP-1.33
Vapor Pressure0.0±0.7 mmHg at 25°C
Refractive Index1.954

GHS Safety & Compliance

IrritantSignal word: Warning
  • H302 — Harmful if swallowed

Activity & Biological Data

Additional Information[1]. J M Jean, et al. 2-Aminopurine fluorescence quenching and lifetimes: role of base stacking. Proc Natl Acad Sci U S A. 2001 Jan 2;98(1):37-41. [2]. Dehong Tan, et al. Decreased glycation and structural protection properties of γ-glutamyl-S-allyl-cysteine peptide isolated from fresh garlic scales (Allium sativum L.). Nat Prod Res. 2015;29(23):2219-22.

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 2-Aminopurine?

The CAS number of 2-Aminopurine is 452-06-2.

What are the molecular formula and molecular weight of 2-Aminopurine?

2-Aminopurine has molecular formula C5H5N5 and molecular weight 135.127 g/mol.

Is 2-Aminopurine hazardous?

2-Aminopurine has GHS signal word Warning and hazard statements H302 — Harmful if swallowed.

What are the upstream and downstream products of 2-Aminopurine?

For 2-Aminopurine, Upstream Products: 2-Amino-6-chloropurine, Thioguanine, Methanimidic acid, (Z)-; Downstream Products: 2-Aminopurine riboside, Famciclovir, 9-(2-Deoxy-β-D-erythro-pentofuranosyl)-9H-purin-2-amine.

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

Last updated:

How to cite: Jingsj. "2-Aminopurine (CAS 452-06-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1127787-3 (accessed 2026-11-07).

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