Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number N0RINYLS found under Norethindrone And Mestranol Tabl by Syntex Laboratories Inc. The National Stock Number assigned to this part is 6505009371763, 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 N0RINYLS.