Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number NDC50419-0511-06 found under Fludarabine Phosphate For Injection by Bayer Healthcare Llc. The National Stock Number assigned to this part is 6505013561191, 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 NDC50419-0511-06.