1. C00060 compound   Carboxylate
                      Monocarboxylate
                      Carboxylic acid
                      R-COOH

2. C00450 compound   delta1-Piperideine-6-L-carboxylate
                      2,3,4,5-Tetrahydropyridine-2-carboxylate

3. C01004 compound   1-Methylpyridinio-3-carboxylate
                      Caffearin
                      Gynesine
                      Trigenelline
                      Trigonelline
                      Betaine nicotinate
                      N-Methylnicotinate

4. C01010 compound   Urea-1-carboxylate
                      Allophanate
                      Allophanic acid

5. C01234 compound   1-Aminocyclopropane-1-carboxylate
                      1-Aminocyclopropane-1-carboxylic acid

6. C01258 compound   1,2-Didehydropiperidine-2-carboxylate

7. C02929 compound   2-Hydroxy carboxylate

8. C03030 compound   Uracil 5-carboxylate
                      Uracil 5-carboxylic acid

9. C03280 compound   Inosine-5'-carboxylate

10. C03314 compound   Xanthine-8-carboxylate

11. C03564 compound   1-Pyrroline-2-carboxylate
                      1-Pyrroline-2-carboxylic acid

12. C03901 compound   Thiomorpholine 3-carboxylate

13. C03912 compound   1-Pyrroline-5-carboxylate
                      (S)-1-Pyrroline-5-carboxylate
                      L-1-Pyrroline-5-carboxylate

14. C04185 compound   5,6-Dihydroxyindole-2-carboxylate
                      DHICA

15. C04445 compound   3,4-Dehydrothiomorpholine-3-carboxylate

16. C04687 compound   (1S,3R,4S)-3,4-Dihydroxycyclohexane-1-carboxylate

17. C05722 compound   D-Pyrrolidone-5-carboxylate
                      D-Pyrrolidone-5-carboxylic acid

18. C05942 compound   Pyrrole-2-carboxylate

19. C06204 compound   2-Hydroxychromene-2-carboxylate

20. C06414 compound   Quinoline-4-carboxylate
                      Cinchonic acid
                      4-Quinolinecarboxylic acid

21. C09822 compound   Cyclohexane-1-carboxylate
                      Hexahydrobenzoic acid

22. C00347 compound   Long-chain carboxylate
                      Long-chain carboxylic acid

23. C01270 compound   3-Hydroxy-2-methylpyridine-5-carboxylate

24. C04027 compound   delta1-Pyrroline 2-carboxylate

25. C04092 compound   delta1-Piperideine-2-carboxylate

26. C04281 compound   3-Hydroxy-L-1-pyrroline-5-carboxylate
                      L-1-Pyrroline-3-hydroxy-5-carboxylate

27. C04282 compound   1-Pyrroline-4-hydroxy-2-carboxylate

28. C04322 compound   3,4-Dihydro-2H-Pyrrole-2-carboxylate

29. C04634 compound   1,6-Dihydroxycyclohexa-2,4-diene-1-carboxylate

30. C04670 compound   (1S,4S)-4-Hydroxy-3-oxocyclohexane-1-carboxylate

31. C05515 compound   5-Ureido-4-imidazole carboxylate
                      4-Ureido-5-imidazolecarboxylic acid

32. C05516 compound   5-Amino-4-imidazole carboxylate
                      4-Amino-5-imidazolecarboxylic acid

33. C06102 compound   Hexan-1-one-6-carboxylate
                      6-Oxohexanoate
                      Adipate semialdehyde

34. C06322 compound   S-1,5-Cyclohexadiene-1-carboxylate coenzymeA
                      Cyclohexa-1,5-dienecarbonyl-CoA
                      Cyclohexa-1,5-diene-1-carbonyl-CoA

35. C11365 compound   CPT-11 carboxylate form

36. C11366 compound   SN-38 carboxylate form

37. C14085 compound   2-Hydroxy-8-methylchromene-2-carboxylate

38. C14106 compound   2-Hydroxy-7-hydroxymethylchromene-2-carboxylate

39. C04448 compound   3-Hydroxymethyl ceph-3-em-4-carboxylate

40. C04773 compound   3-Hydroxy-4-hydroxymethyl-2-methylpyridine-5-carboxylate
                      5-Pyridoxate

41. C04826 compound   5-(3-Carboxy-3-oxopropenyl)-4,6-dihydroxypyridine-2-carboxylate

42. C05817 compound   2-Succinyl-6-hydroxy-2,4-cyclohexadiene-1-carboxylate
                      (1S,6R)-6-Hydroxy-2-succinylcyclohexa-2,4-diene-1-carboxylate

43. C06050 compound   2-Methyl-3-hydroxy-5-formylpyridine-4-carboxylate
                      5-Formyl-3-hydroxy-2-methylpyridine-4-carboxylate

44. C06321 compound   cis-1,2-Dihydroxycyclohexa-3,5-diene-1-carboxylate
                      1,6-Dihydroxy-cis-2,4-cyclohexadiene-1-carboxylic acid

45. C11375 compound   SN38 glucuronide carboxylate form

46. C11425 compound   2-Hydroxy-2H-benzo[h]chromene-2-carboxylate

47. C13805 compound   N-Butyl-beta-carboline-3-carboxylate

48. C04751 compound   5'-Phosphoribosyl-5-amino-4-imidazolecarboxylate
                      1-(5'-Phosphoribosyl)-5-amino-4-imidazolecarboxylate
                      1-(5-Phospho-D-ribosyl)-5-amino-4-imidazolecarboxylate
                      5-Amino-1-(5-phospho-D-ribosyl)imidazole-4-carboxylate
                      5'-Phosphoribosyl-4-carboxy-5-aminoimidazole
                      1-(5'-Phosphoribosyl)-4-carboxy-5-aminoimidazole
                      1-(5'-Phosphoribosyl)-5-amino-4-carboxyimidazole

49. C06729 compound   cis-1,2-Dihydroxy-4-methylcyclohexa-3,5-diene-1-carboxylate
                      4-Methylcyclohexa-3,5-diene-1,2-cis-diol-1-carboxylic acid

50. C12248 compound   5-Hydroxy-2-oxo-4-ureido-2,5-dihydro-1H-imidazole-5-carboxylate

51. C13759 compound   Methyl-2,5-dimethyl-4-(2-(phenylmethyl)benzoyl)-1H-pyrrole-3- carboxylate
                      FPL64176

52. C04746 compound   3beta-Hydroxy-5alpha-cholest-7-ene-4alpha-carboxylate

53. C12245 compound   Methyl5-(but-3-en-1-yl)amino-1,3,4-oxadiazole-2-carboxylate

54. C04840 compound   3beta-Hydroxy-4beta-methyl-5alpha-cholest-7-ene-4alpha-carboxylate

55. C13120 compound   Methyl 18beta-hydroxy-11,17alpha-dimethoxy-3beta,20alpha-yohimban-16beta- carboxylate 4-hydroxy
                      Siringina
                      Syrosingopine