Aftin-4 1MG. Aftin-4, An amyloid-B42 Inducer, CAS: 866893-90-5, Molecular Formula: C20H28N6O, Molecular Weight: 368. 48, Purity: greater than or equal to 98% by NMR, Appearance: White to off-white solid, Synonym: N6-Methyl-(R)-roscovitine Amyloid-B Forty-Two Inducer 4, Size: 1MG