Synonyms:
4-chloro-7-(p-tolylsulfonyl)pyrrolo[2,3-d]pyrimidine ; 4-chloro-7-(p-toluenesulfonyl)-7h-pyrrolo[2,3-d]pyrimidine ; tofacitinib impurity 20 ; 4-chloro-7-tosyl-7h-pyrrolo[2,3-d]pyrimidine ; 7h-pyrrolo[2,3-d]pyrimidine,4-chloro-7-[(4-methylphenyl)sulfonyl]- ; 4-chloro-7-[(4-methylphenyl)sulfonyl]-7h-pyrrolo[2,3-d]pyrimidine ; 4-chloro-7-p-toluenesulphonyl-7h-pyrrolo[2,3-d]pyrimidine ; 4-chloro-7-tosyl-7h-pyrro... ; tofacitinib impurity r ; 4-chloro-7-(toluene-4-sulfonyl)-7h-pyrrolo[2,3-d]pyrimidine