1. C00575 compound   Cyclic AMP
                      Cyclic adenylic acid
                      3',5'-Cyclic AMP
                      cAMP
                      Adenosine 3',5'-phosphate

2. C00941 compound   3',5'-Cyclic CMP
                      Cytidine 3',5'-cyclic monophosphate

3. C00942 compound   Cyclic GMP
                      3',5'-Cyclic GMP
                      Guanosine 3',5'-cyclic monophosphate
                      Guanosine 3',5'-cyclic phosphate
                      cGMP

4. C00943 compound   3',5'-Cyclic IMP
                      Inosine 3',5'-cyclic monophosphate

5. C00968 compound   3',5'-Cyclic dAMP

6. C01240 compound   2',3'-Cyclic nucleotide
                      Nucleoside 2',3'-cyclic phosphate

7. C02019 compound   Cyclic ketone

8. C02353 compound   2',3'-Cyclic AMP

9. C02354 compound   2',3'-Cyclic CMP

10. C02355 compound   2',3'-Cyclic UMP

11. C02507 compound   3',5'-Cyclic dGMP

12. C04212 compound   3',5'-Cyclic nucleotide
                      Nucleoside 3',5'-cyclic phosphate

13. C04408 compound   2',3'-Cyclicphosphooligoribonucleotide
                      2',3'-Cyclic phosphooligoribonucleotide

14. C06059 compound   Cyclic amidines

15. C06189 compound   Cyclic glycerate-2,3P2
                      Cyclic 2,3-bisphospho-D-glycerate
                      Cyclic 2,3-diphospho-D-glycerate
                      cDPG

16. C06194 compound   2',3'-Cyclic GMP

17. C11824 compound   Cyclic amide

18. C03491 compound   Cyclic secondary alcohol

19. C03947 compound   Glycerol 1,2-cyclic phosphate

20. C13050 compound   Cyclic ADP-ribose
                      cADPR

21. C04299 compound   1D-myo-Inositol 1,2-cyclic phosphate
                      D-myo-Inositol 1,2-cyclic phosphate

22. C04312 compound   RNA terminal-2',3'-cyclic-phosphate

23. C11453 compound   3-Methyl-1,2,3,4-tetrahydroxybutane-1,3-cyclic bisphosphate
                      2-C-Methyl-D-erythritol 2,4-cyclodiphosphate

24. C07306 compound   D-Phenylalanyl-L-cysteinyl-L-phenylalanyl-D-tryptophyl-L-lysyl-L- threonyl-N-((1R,2R)-2-hydroxy-1-(hydroxymethyl)propyl)-L- cysteinamide cyclic (2->7)-disulfide
                      Octreotide
                      Octreotide acetate