Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number NDC00235-0954-64 found under Undecylenic Acid An by Pennwalt Corp. The National Stock Number assigned to this part is 6505007644366, 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 NDC00235-0954-64.