Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 069 6850 83 found under Mithramycin For Inj by Pfizer Inc. The National Stock Number assigned to this part is 6505010081604, 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 069 6850 83.