| No. | Name | Catagory | CAS NO. | 
| 31 | 1-Hydroxyethylethoxypiperazine | Pharmaceutical Intermediates | 13349-82-1 | 
| 32 | 1,4-Cubanedicarboxylic Acid | Pharmaceutical Intermediates | 32846-66-5 | 
| 33 | Tri-tert-butyl 1,4,7,10-Tetraazacyclododecane-1,4,7,10-tetraacetate | Pharmaceutical Intermediates | 137076-54-1 | 
| 34 | (R)-3-(Boc-amino)pyrrolidine | Peptide synthesis | 122536-77-0 | 
| 35 | N-Boc-pyrroline | Peptide synthesis | 73286-70-1 | 
| 36 | (R)-(+)-1-Boc-3-aminopyrrolidine | Peptide synthesis | 147081-49-0 | 
| 37 | (R)-3-Methylpyrrolidine hydrochloride | Peptide synthesis | 235093-98-8 | 
| 38 | Pyrrolidin-2-imine (hydrochloride) | Peptide synthesis | 7544-75-4 | 
| 39 | (R)-(-)-Boc-3-pyrrolidinol | Peptide synthesis | 109431-87-0 | 
| 40 | (R)-3-Pyrrolidinol hydrochloride | Peptide synthesis | 104706-47-0 |