CAS Number: 142217-69-4
Chemical Name: 2-Amino-9-(4-hydroxy-3-hydroxymethyl-2-methylene-cyclopentyl)-3,9-dihydro-purin-6-one
Molecular Formula: C12H15N5O3
Molecular Weight: 277.28

CAS Number: 519-37-9
Chemical Name: Etofylline
Molecular Formula: C9H12N4O3
Molecular Weight: 224.22