6-Amino-3-methyluracil

Also known as: 2,4(1H,3H)-Pyrimidinedione, 6-amino-3-methyl-, 6-Amino-3-methylpyrimidine-2,4(1H,3H)-dione, 3-Methyl-6-aminouracil, Urapidil Impurity 1 (6-Amino-3-methyluracil), Urapidil Impurity 15 (6-Amino-3-methyluracil)

6-Amino-3-methyluracil (CAS 21236-97-5) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H7N3O2 and a molecular weight of 141.12800 g/mol. Key property: a melting point of 350-352ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 21236-97-5
Jingsj CID: J-1355825-3
Molecular Formula: C₅H₇N₃O₂
Molecular Weight: 141.12800 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	350-352ºC
Exact Mass	141.05400
PSA	80.88000
Storage Conditions	Refrigerator

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 6-Amino-3-methyluracil?

The CAS number of 6-Amino-3-methyluracil is 21236-97-5.

What are the molecular formula and molecular weight of 6-Amino-3-methyluracil?

6-Amino-3-methyluracil has molecular formula C5H7N3O2 and molecular weight 141.12800 g/mol.

What are the upstream and downstream products of 6-Amino-3-methyluracil?

For 6-Amino-3-methyluracil, Upstream Products: 6-Aminouracil, iodomethane, 6-Amino-3-methyl-2-(methylthio)pyrimidin-4(3H)-one; Downstream Products: 5-Acetylamino-6-amino-3-methyluracil, 1-Methylxanthine, 6-amino-5-nitroso-3-methyluracil.

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

Last updated: 8/21/2026

How to cite: Jingsj. "6-Amino-3-methyluracil (CAS 21236-97-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1355825-3 (accessed 2026-11-09).

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