9-Methylxanthine

Also known as: 2,6-Dihydroxy-9-methylpurine, 3,9-dihydro-9-methyl-1H-purine-2,6-dione, 9-methyl-3H-purine-2,6-dione, 9-methyl-1H-purine-2,6(3H,9H)-dione, 9-Methyl-3,9-dihydro-purin-2,6-dion, 9-Methyl-1,2,3,6-tetrahydro-9H-purine-2,6-dione

9-Methylxanthine (CAS 1198-33-0) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C6H6N4O2 and a molecular weight of 166.13700 g/mol. Key properties include a melting point of >300ºC and a density of 1.83g/cm3. No supplier offers are currently listed; request a quote. Record last updated Nov 3, 2026.

CAS No.: 1198-33-0
Jingsj CID: J-1011248-8
Molecular Formula: C₆H₆N₄O₂
Molecular Weight: 166.13700 g/mol
Category: Pharma Intermediates
Last updated: 11/3/2026

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Physicochemical Properties

Melting Point	>300ºC
Density	1.83g/cm3
Exact Mass	166.04900
PSA	83.54000
Refractive Index	1.827

Customs & Trade Information

HS Code	2933990090
Summary	2933990090. 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 9-Methylxanthine?

The CAS number of 9-Methylxanthine is 1198-33-0.

What are the molecular formula and molecular weight of 9-Methylxanthine?

9-Methylxanthine has molecular formula C6H6N4O2 and molecular weight 166.13700 g/mol.

What are the upstream and downstream products of 9-Methylxanthine?

For 9-Methylxanthine, Downstream Products: 9-Methyluric acid, Isocaffeine, 2,6-Dichloro-9-methyl-9H-purine.

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

Last updated: 11/3/2026

How to cite: Jingsj. "9-Methylxanthine (CAS 1198-33-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1011248-8 (accessed 2026-11-09).

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