Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 054 8841 04 found under Theophylline Elixir by Boehringer Mannheim Corp. The National Stock Number assigned to this part is 6505010058491, 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 054 8841 04.