Ingenol 3-angelate 1MG. Ingenol 3-angelate, CAS number: 75567-37-2, Molecular Formula: C25H34O6, Molecular Weight: 430. 53, Purity: greater than or equal to 98%, Appearance: White solid, Synonym: 8a-methanocyclopenta[a]cyclopropa[e]cyclodecen-6-yl ester PEP 005, Ingenol mebutate, Size: 1MG