4,6-Diamino-5-(formylamino)pyrimidine

Also known as: FAPy-adenine, N-(4,6-Diaminopyrimidin-5-yl)formamide, 4,6-Diamino-5-formamidopyrimidine, 4,6-Diamino-5-(formylamino)pyrimidine hydrochloride, 4,6-Diamino-5-N-formamidopyrimidine, 4,6-Diamino-5-pyrimidinylformamide

4,6-Diamino-5-(formylamino)pyrimidine (CAS 5122-36-1) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H7N5O and a molecular weight of 153.14500 g/mol. Key properties include a boiling point of 464.7±47.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 234.8±29.3 °C. No supplier offers are currently listed; request a quote. Record last updated Nov 2, 2026.

CAS No.: 5122-36-1
Jingsj CID: J-1959697-5
Molecular Formula: C₅H₇N₅O
Molecular Weight: 153.14500 g/mol
Category: Pharma Intermediates
Last updated: 11/2/2026

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Physicochemical Properties

Boiling Point	464.7±47.0 °C at 760 mmHg
Density	1.4±0.1 g/cm3
Flash Point	234.8±29.3 °C
Exact Mass	281.080048
PSA	106.92000
LogP	1.92
Vapor Pressure	0.0±1.1 mmHg at 25°C
Refractive Index	1.674

Activity & Biological Data

Target	Human Endogenous Metabolite
Additional Information	[1]. Gabbita SP, et al. Increased nuclear DNA oxidation in the brain in Alzheimer's disease. [2]. Cysewski P, et al. Theoretical description of the coding potential of diamino-5-formamidopyrimidines. Z Naturforsch C J Biosci. 1999 Mar-Apr;54(3-4):239-45. [3]. Lee SH, et al. A rapid and sensitive method for quantitation of nucleosides in human urine using liquid chromatography/mass spectrometry with direct urine injection. Rapid Commun Mass Spectrom. 2004;18(9):973-7.

Target

Human Endogenous Metabolite

Additional Information

[1]. Gabbita SP, et al. Increased nuclear DNA oxidation in the brain in Alzheimer's disease. [2]. Cysewski P, et al. Theoretical description of the coding potential of diamino-5-formamidopyrimidines. Z Naturforsch C J Biosci. 1999 Mar-Apr;54(3-4):239-45. [3]. Lee SH, et al. A rapid and sensitive method for quantitation of nucleosides in human urine using liquid chromatography/mass spectrometry with direct urine injection. Rapid Commun Mass Spectrom. 2004;18(9):973-7.

Customs & Trade Information

HS Code	2933599090
Summary	2933599090. 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 4,6-Diamino-5-(formylamino)pyrimidine?

The CAS number of 4,6-Diamino-5-(formylamino)pyrimidine is 5122-36-1.

What are the molecular formula and molecular weight of 4,6-Diamino-5-(formylamino)pyrimidine?

4,6-Diamino-5-(formylamino)pyrimidine has molecular formula C5H7N5O and molecular weight 153.14500 g/mol.

What are the upstream and downstream products of 4,6-Diamino-5-(formylamino)pyrimidine?

For 4,6-Diamino-5-(formylamino)pyrimidine, Upstream Products: Formic Acid, 4,5,6-Pyrimidinetriamine sulfate, 4,5,6-Triaminopyrimidine; Downstream Products: Adenine.

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

Last updated: 11/2/2026

How to cite: Jingsj. "4,6-Diamino-5-(formylamino)pyrimidine (CAS 5122-36-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1959697-5 (accessed 2026-11-09).

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