H 261

Formula : C50-H73-N13-O9
CAS : 91464-97-0 

(OH) denotes a hydroxyethylene (-(S)CHOH-CH2-) transition-state isostere in the scissile bond surrogate.

H 77

Formula :
CAS : 82131-82-6 

Angiotensinogen (6-13)-octapeptide in which the peptide bond -CO-NH- at the Leu(9)-Leu(11) linkage is replaced by a -CH2-NH- bond.

H 87-07

Formula :
CAS : 30311-37-6 

Beta(1)-receptor blockader; analog of H 93/26 substituting ethoxy for ethyl group.