Pharmaceutical ChemicalsChina Treating Rheumatoid Arthritis CAS No. 540737-29-9 Tofacitinib Citrate Inhibitor Tofacitinib Powder Tofacitinib Citrate, Find details about China Tofacitinib Citrate, Tofacitinib from Treating Rheumatoid Arthritis CAS No. 540737-29-9 Tofacitinib Citrate Inhibitor Tofacitinib Powder Tofacitinib Citrate