Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number TAVIST 1 found under Clemastine Fumarate Tablets Usp by Novartis Pharmaceuticals Corporation. The National Stock Number assigned to this part is 6505013833686, 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 TAVIST 1.