Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number NDC55289-0866-10 found under Doxycycline Hyclate Tablets Usp by West Ward Pharmaceutical Corp. The National Stock Number assigned to this part is 6505014915504, 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 NDC55289-0866-10.