di- and tripeptide nitriles , glycylaminoacetonitrile ( gly-aan ) , diglycylaminoacetonitrile ( gly-gly-aan ) , alany-alpha-aminopropionitrile ( ala-apn ) , and dialanyl-alpha-aminopropionitrile ( ala-ala-apn ) were synthesized first .
C0028131
nitriles
C0002578
ala-apn