IDO1 Inhibitor I 5MG. IDO1 Inhibitor I, CAS: 914471-09-3, Molecular Formula: C9H7ClFN5O2, Molecular Weight: 271. 63, Purity: greater than or equal to 98%, Appearance: White solid, Synonym: 4-amino-N-(3-chloro-4-fluorophenyl)-N'-hydroxy-1, 2, 5-oxadiazole-3-carboximidamide, Size: 5MG