5-NAPHTHYL-BETA-METHYLAMINOCARBONY-3’-O-ACETYL-2’-O-METHL-5’-O-DMTR-URIDINE CAS:2095417-00-6 A944989 5-OXO-4,5-DIHYDRO-PYRAZOLO[1,5-A]PYRIMIDINE-2-CARBOXYLIC ACID METHYL ESTER CAS:1228351-47-0 A1223181 |