Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number ETRAFON FORTE 4-25 found under Perphenazine And Am by Schering Corp. The National Stock Number assigned to this part is 6505010281189, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like ETRAFON FORTE 4-25.