BODIPY-Acetylene Reagent 1MG. BODIPY-Acetylene Reagent, Molecular Formula: C21H19BF2N2, Molecular Weight: 348. 2, Purity: greater than or equal to 98%, Appearance: Orange solid, Synonym: 4, 4-Difluoro-8-(4-ethynylphenyl)-1, 3, 5, 7-tetramethyl-4-bora-3a, 4a-diaza-s-indacene, Size: 1MG