英文别名4-[1-(1-ethoxyethyl)pyrazol-4-yl]-7H-pyrrolo[2,3-d]pyrimidine; Baricitinib Impurity 4; 1-(1-ethoxyethyl)-4-{7H-pyrrolo[2,3-d]pyrimidin-4-yl}-1H-pyrazole; 7H-Pyrrolo[2,3-d]pyrimidine, 4-[1-(1-ethoxyethyl)-1H-pyrazol-4-yl]-; Baricitinib Impurity 9; Baritinib impurity 12