Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number BUTIS0LS0DIUM found under Butabarbital Sodium by Mcneil Corp. The National Stock Number assigned to this part is 6505002076049, 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 BUTIS0LS0DIUM.