Baricitinib Impurity 6 Catalogue B410226 CAS 2497340-56-2 M.W 279.30 36.46 M.F C14H13N7 HCl Specifications FAQs 2-(3-(4-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)-1H-pyrazol-1-yl)azetidin- 3-yl)acetonitrile hydrochloride