2-methylpyrido[3,4-b]pyrazine-5,7-diamine

5,7-二氨基-2-甲基吡啶并[3,4-b]吡嗪

Also known as: Pyrido[3,4-b]pyrazine, 5,7-diamino-2-methyl- (8CI), 2-METHYLPYRIDO[3,4-B]PYRAZINE-5,7-DIAMINE, Pyrido[3,4-b]pyrazine-5,7-diamine, 2-methyl-, NSC 101736, Pirido[3,4-b]pirazina, 5,7-diamino-2-metil- (8CI), (7-Amino-2-Methyl-Pyrido[3,4-B]Pyrazin-5-Yl)Amine

2-methylpyrido[3,4-b]pyrazine-5,7-diamine (CAS 16335-90-3) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C8H9N5 and a molecular weight of 175.19100 g/mol. It is also known as Pyrido[3,4-b]pyrazine, 5,7-diamino-2-methyl- (8CI), 2-METHYLPYRIDO[3,4-B]PYRAZINE-5,7-DIAMINE and Pyrido[3,4-b]pyrazine-5,7-diamine, 2-methyl-. Key properties include a boiling point of 421.9ºC at 760mmHg, a density of 1.412g/cm3 and a flash point of 238.5ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
16335-90-3
Jingsj CID
J-1355025-1
Molecular Formula
C8H9N5
Chinese Name
5,7-二氨基-2-甲基吡啶并[3,4-b]吡嗪
Molecular Weight
175.19100 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point421.9ºC at 760mmHg
Density1.412g/cm3
Flash Point238.5ºC

Frequently Asked Questions

What is the CAS number of 2-methylpyrido[3,4-b]pyrazine-5,7-diamine?

The CAS number of 2-methylpyrido[3,4-b]pyrazine-5,7-diamine is 16335-90-3.

What are the molecular formula and molecular weight of 2-methylpyrido[3,4-b]pyrazine-5,7-diamine?

2-methylpyrido[3,4-b]pyrazine-5,7-diamine has molecular formula C8H9N5 and molecular weight 175.19100 g/mol.

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

Last updated:

How to cite: Jingsj. "2-methylpyrido[3,4-b]pyrazine-5,7-diamine (CAS 16335-90-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1355025-1 (accessed 2026-10-25).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.