| 930 / | HD | PEPTIDE OR PROTEIN SEQUENCE |
| DIG 532 | DD | CYCLIC PEPTIDES DERIVED FROM AT LEAST FIVE AMINO ACIDS AND CONTAINING AT LEAST ONE ABNORMAL PEPTIDE LINK (C07K-7/50) {2} |
| DIG 533 | DD | .~ With only normal peptide links in the ring (C07K-7/52) {2} |
| DIG 535 | | .~.~ With at least one amino acid in D-form (C07K-7/52B) |