MPN: 5SGTMC7K3F40C2N has been scheduled for obsolescence and will be discontinued.
Kindly refer 'Product Discontinuance Notication PDC1825' link below.
MPN: 5SGTMC7K3F40C2NES has been replaced with standard MPN:5SGTMC7K3F40C2N in ADV1307 link below.
Yes, you're correct the Last Buy for MPN: 5SGTMC7K3F40C2NES has passed.
But you can check with 'Intel Authorized Distributors' list below for the required device.