Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number NDC00172-4365-70 found under Labetalol Hydrochlo by Zenith Laboratories Inc. The National Stock Number assigned to this part is 6505012085995, 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 NDC00172-4365-70.