英文别名8-((3R,4S)-4-Ethylpyrrolidin-3-yl)-3-tosyl-3H-imidazo(1,2-a)pyrrolo(2,3-e)pyrazine; UPADACITINIB IMPURITY 49; 3H-Imidazo[1,2-a]pyrrolo[2,3-e]pyrazine, 8-[(3R,4S)-4-ethyl-3-pyrrolidinyl]-3-[(4-methylphenyl)sulfonyl]-; 8-[(3R,4S)-4-Ethyl-3-pyrrolidinyl]-3-[(4-methylphenyl)sulfonyl]-3H-imidazo[1,2-a]pyrrolo[2,3-e]pyrazine; Upadacitinib Impurity 55; Upatinib impurity 20; RMA-859