Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number NDC54391-1909-55 found under Amino Acid Injection by Colgate Palmolive Co. The National Stock Number assigned to this part is 6505010936762, 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 NDC54391-1909-55.