2,6-Dihydroxy-3-methylpurine
2-Amino-6-chloropurine-9-riboside
6-Mercaptopurine
2,6-Diaminopurine 2-deoxyriboside
8-[(E)-2-(3,4-dimethoxyphenyl)ethenyl]-1,3-diethyl-7-methyl-purine-2,6 -dione
Purine
6-Chloro-9-[2ˊ.3ˊ-0-(isopropylidene)-β-D-ribofuronosyl]-9H-purine
2,6-Dihydroxypurine
7H-Purine-7-acetaldehyde, 1,2,3,6-tetrahydro-1,3-dimethyl-2,6-dioxo-
9H-Purine, 2,6-dichloro-9-[2,3-O-(1-methylethylidene)-β-D-ribofuranosyl]-
Dimenhydrite Impurity(8-chloro-1-methyl-2,3,6,7-tetrahydro-1H-purine-2,6-dione)
6-Mercaptopurine monohydrate
6-n-cyclopropyl-9-[(1r,4s)-4-[(2-methylpropan-2-yl)oxymethyl]cyclopent-2-en-1-yl]purine-2,6-diamine
2-(1-NAPHTHOXY)-6-(4-MORPHOLINOANILINO)-9-CYCLOHEXYLPURINE
6-Chloro-2-fluoropurine
2-Aminopurine
2-Amino-6-chloropurine
8-methyl-7H-purine
2-Amino-9-beta-D-ribofuranosyl-9H-purine-6-(1H)-one hydrate
1H-Purine-2,6-dione,8-[(3S)-3-amino-1-piperidinyl]-7-(2-butynyl)-3,7-dihydro-3-methyl-1-[(4-methyl-2-quinazolinyl)methyl]-
8-[(1E)-2-(3,4-Dimethoxyphenyl)ethenyl]-1,3-diethyl-3,9-dihydro-1H-purine-2,6-dione
2-Amino-6-cyclopropylamino-9H-purine
6-Dimethylaminopurine
2,6-dichloro-9-(1-methylethyl)-9H-purine
Doxofylline Impurity 3 (Theophylline Impurity 4)
8-bromo-7-but-2-yn-1-yl-3-methyl-3,7-dihydro-1H-purine-2,6-dione
1H-Purine-2,6-dione, 3,7-dihydro-1,3-diethyl-8-(2-(3-hydroxy-4-methoxy phenyl)ethenyl)-7-methyl-, (E)-
2,6-Dichloropurine riboside
6--Chloropurine
6-Chloropurine riboside