1,9-Dimethylxanthine

1,9-二甲基黄嘌呤

Also known as: 1,9-Dimethyl-1H-purine-2,6(3H,9H)-dione, 1,9-Dimethyl-3,9-dihydro-1H-purine-2,6-dione, 1,9-Dimethyl-3,9-dihydro-purin-2,6-dion, 1,9-Dimethyl-9H-purine-2,6(1H,3H)-dione, 1,9-Dimethyl-isoxanthin, 1,9-dimethyl-3,9-dihydro-purine-2,6-dione, 1,9-dimethyl-3H-purine-2,6-dione, 2,6-DIHYDROXY-1,9-DIMETHYLPURINE, 2,6-Dihydroxy-1,9-dimethylpurine, 3,9-dihydro-1,9-dimethyl-1H-purine-2,6-dione, 9-Hydro-7-dehydro-1,9-dimethylxanthine, Isoparaxanthine, EINECS 251-367-0, Caffeine Impurity 14

1,9-Dimethylxanthine (CAS 33073-01-7) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C7H8N4O2 and a molecular weight of 180.164 g/mol. It is also known as 1,9-Dimethyl-1H-purine-2,6(3H,9H)-dione, 1,9-Dimethyl-3,9-dihydro-1H-purine-2,6-dione and 1,9-Dimethyl-3,9-dihydro-purin-2,6-dion. Key properties include a melting point of ≥300ºC and a density of 1.6±0.1 g/cm3. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

33073-01-7

Jingsj CID

J-1515199-1

Molecular Formula

C₇H₈N₄O₂

Chinese Name

1,9-二甲基黄嘌呤

Molecular Weight

180.164 g/mol

Category

Pharma Intermediates

Last updated

8/21/2026