1. 3.1.4.1 enzyme   5'-phosphodiesterase
                      phosphodiesterase I
                      5'-nucleotide phosphodiesterase
                      5'-exonuclease
                      oligonucleate 5'-nucleotidohydrolase

2. 3.1.15.1 enzyme   venom phosphodiesterase
                      venom exonuclease

3. 3.1.16.1 enzyme   phosphodiesterase II
                      spleen phosphodiesterase
                      3'-nucleotide phosphodiesterase
                      3'-exonuclease
                      spleen exonuclease

4. 3.1.31.1 enzyme   spleen phosphodiesterase
                      thermonuclease
                      micrococcal endonuclease
                      micrococcal nuclease
                      nuclease T
                      nuclease T'
                      spleen endonuclease
                      staphylococcal nuclease
                      Staphylococcus aureus nuclease
                      Staphylococcus aureus nuclease B
                      ribonucleate (deoxynucleate) 3'-nucleotidohydrolase

5. 3.1.4.11 enzyme   monophosphatidylinositol phosphodiesterase
                      triphosphoinositide phosphodiesterase
                      1-phosphatidylinositol-4,5-bisphosphate phosphodiesterase
                      phosphoinositidase C
                      phosphoinositide phospholipase C
                      phosphatidylinositol phospholipase C, PI-PLC
                      1-phosphatidyl-1D-myo-inositol-4,5-bisphosphate inositoltrisphosphohydrolase
                      1-phosphatidyl-D-myo-inositol-4,5-bisphosphate  inositoltrisphosphohydrolase

6. 3.1.4.12 enzyme   sphingomyelin phosphodiesterase
                      neutral sphingomyelinase
                      sphingomyelin cholinephosphohydrolase

7. 3.1.4.16 enzyme   2':3'-cyclic phosphodiesterase
                      cyclic phosphodiesterase:3'-nucleotidase
                      2',3 '-cyclic AMP phosphodiesterase
                      cyclic 2',3'-nucleotide phosphodiesterase
                      2',3'-cyclic nucleoside monophosphate phosphodiesterase
                      2',3'-cyclic-nucleotide 2'-phosphodiesterase
                      cyclic 2',3'-nucleotide 2'-phosphodiesterase
                      2':3'-cyclic nucleotide phosphodiesterase:3'-nucleotidase
                      2',3'-cyclic nucleotidase
                      2',3'-cyclic nucleotide phosphohydrolase
                      2',3'-cyclic AMP 2'-phosphohydrolase
                      ribonucleoside 2',3'-cyclic phosphate diesterase
                      nucleoside-2',3'-cyclic-phosphate 3'-nucleotidohydrolase

8. 3.1.4.17 enzyme   cyclic nucleotide phosphodiesterase
                      3',5'-cyclonucleotide phosphodiesterase
                      3',5'-nucleotide phosphodiesterase
                      cyclic 3',5'-phosphodiesterase
                      3',5'-cyclic-nucleotide phosphodiesterase
                      cyclic 3',5'-mononucleotide phosphodiesterase
                      cyclic 3',5'-nucleotide phosphodiesterase
                      nucleoside-3',5-monophosphate phosphodiesterase
                      3', 5'-cyclic nucleoside monophosphate phosphodiesterase
                      3': 5'-monophosphate phosphodiesterase (cyclic CMP)
                      cyclic 3',5-nucleotide monophosphate phosphodiesterase
                      cytidine 3':5'-monophosphate phosphodiesterase (cyclic CMP)
                      PDE
                      3',5'-cyclic-nucleotide 5'-nucleotidohydrolase
                      3':5'-cyclic nucleotide 5'-nucleotidohydrolase
                      nucleoside 3',5'-cyclic phosphate diesterase

9. 3.1.4.2 enzyme   glycerolphosphorylcholine phosphodiesterase
                      glycerophosphocholine phosphodiesterase
                      glycerophosphohydrolase
                      glycerylphosphorylcholinediesterase
                      glycerophosphinicocholine diesterase
                      sn-glycero-3-phosphocholine glycerophosphohydrolase
                      sn-glycero-3-phosphorylcholine diesterase

10. 3.1.4.35 enzyme   cGMP phosphodiesterase
                      cyclic GMP phosphodiesterase
                      3',5'-cyclic-GMP phosphodiesterase
                      cyclic 3',5'-GMP phosphodiesterase
                      cyclic guanosine 3',5'-monophosphate phosphodiesterase
                      cyclic guanosine 3',5'-phosphate phosphodiesterase
                      guanosine cyclic 3',5'-phosphate phosphodiesterase
                      cGMP-PDE
                      3',5'-cyclic-GMP 5'-nucleotidohydrolase

11. 3.1.4.39 enzyme   alkylglycerophosphoethanolamine phosphodiesterase
                      lysophospholipase D
                      1-alkyl-sn-glycero-3-phosphoethanolamine ethanolaminehydrolase

12. 3.1.4.41 enzyme   sphingomyelin phosphodiesterase D
                      sphingomyelinase D
                      sphingomyelin ceramide-phosphohydrolase

13. 3.1.4.46 enzyme   glycerophosphodiester phosphodiesterase
                      glycerophosphoryl diester phosphodiesterase
                      glycerophosphodiester glycerophosphohydrolase
                      gene hpd protein
                      IgD-binding protein D

14. 3.1.4.49 enzyme   mannosylphosphodolichol phosphodiesterase
                      dolichylphosphate-mannose phosphodiesterase
                      dolichyl-beta-D-mannosyl-phosphate dolichylphosphohydrolase

15. 4.6.1.13 enzyme   monophosphatidylinositol phosphodiesterase
                      1-phosphatidylinositol phosphodiesterase
                      phosphatidylinositol diacylglycerol-lyase
                      phosphatidylinositol phospholipase C
                      1-phosphatidyl-D-myo-inositol inositolphosphohydrolase  (cyclic-phosphate-forming)
                      1-phosphatidyl-1D-myo-inositol diacylglycerol-lyase (1,2-cyclic-phosphate-forming)

16. 3.1.4.13 enzyme   serine-ethanolaminephosphate phosphodiesterase
                      serine ethanolamine phosphodiester phosphodiesterase
                      SEP diesterase
                      serine-phosphoethanolamine ethanolaminephosphohydrolase

17. 3.1.4.37 enzyme   cyclic-CMP phosphodiesterase
                      2',3'-cyclic AMP phosphodiesterase
                      cyclic 2',3'-nucleotide phosphodiesterase
                      2',3'-cyclic nucleoside monophosphate phosphodiesterase
                      2',3'-cyclic-nucleotide 3'-phosphodiesterase
                      2':3'-cyclic nucleotide 3'-phosphodiesterase
                      cyclic 2',3'-nucleotide 3'-phosphodiesterase
                      CNPase
                      2',3'-cyclic nucleotide phosphohydrolase
                      2':3'-CNMP-3'-ase
                      2',3'-cyclic nucleotide 3'-phosphohydrolase
                      nucleoside-2',3'-cyclic-phosphate 2'-nucleotidohydrolase

18. 3.1.4.40 enzyme   CMP-N-acylneuraminate phosphodiesterase
                      CMP-sialate hydrolase
                      cytidine monophosphosialate hydrolase
                      cytidine monophosphosialic hydrolase
                      CMP-N-acetylneuraminate hydrolase
                      CMP-sialic acid hydrolase
                      CMP-N-acylneuraminate N-acylneuraminohydrolase
                      CMP-N-acylneuraminic acid hydrolase
                      cytidine monophosphate-N-acetylneuraminic acid hydrolase

19. 3.1.4.45 enzyme   alpha-N-acetylglucosaminyl phosphodiesterase
                      phosphodiester glycosidase
                      lysosomal alpha-N-acetylglucosaminidase
                      N-acetylglucosamine-1-phosphodiester alpha-N-acetylglucosaminidase
                      alpha-N-acetyl-D-glucosamine-1-phosphodiester  N-acetylglucosaminidase
                      2-acetamido-2-deoxy-alpha-D-glucose 1-phosphodiester  acetamidodeoxyglucohydrolase
                      glycoprotein-N-acetyl-D-glucosaminyl-phospho-D-mannose N-acetyl-D-glucosaminylphosphohydrolase

20. 3.1.4.48 enzyme   dolichol phosphoglucose phosphodiesterase
                      dolichylphosphate-glucose phosphodiesterase
                      Dol-P-Glc phosphodiesterase
                      dolichyl-beta-D-glucosyl-phosphate dolichylphosphohydrolase

21. 3.6.1.41 enzyme   adenosine tetraphosphate phosphodiesterase
                      Ap4A hydrolase
                      diadenosinetetraphosphatase (symmetrical)
                      dinucleosidetetraphosphate (symmetrical)
                      diadenosine polyphosphate hydrolase
                      diadenosine tetraphosphate hydrolase
                      bis(5'-adenosyl) tetraphosphatase
                      symmetrical diadenosine tetraphosphate hydrolase
                      bis(5'-nucleosyl)-tetraphosphatase (symmetrical)
                      diadenosine 5',5'''-P1,P4-tetraphosphatase
                      P1,P4-bis(5'-nucleosyl)-tetraphosphate nucleosidebisphosphohydrolase

22. 3.1.4.14 enzyme   [acyl-carrier-protein] phosphodiesterase
                      [acyl-carrier-protein] 4'-pantetheine-phosphohydrolase

23. 3.1.4.42 enzyme   glycerol-1,2-cyclic-phosphate 2-phosphodiesterase
                      rac-glycerol 1:2-cyclic phosphate 2-phosphodiesterase
                      rac-glycerol-1,2-cyclic-phosphate 2-glycerophosphohydrolase

24. 3.1.4.43 enzyme   glycerophosphoinositol inositolphosphodiesterase
                      1,2-cyclic-inositol-phosphate phosphodiesterase
                      inositol-1,2-cyclic-phosphate 2-inositolphosphohydrolase
                      D-inositol 1,2-cyclic phosphate 2-phosphohydrolase
                      1-(sn-glycero-3-phospho)-1D-myo-inositol inositolphosphohydrolase
                      D-myo-inositol 1,2-cyclic phosphate 2-phosphohydrolase
                      D-myo-inositol 1:2-cyclic phosphate 2-phosphohydrolase
                      1-D-myo-inositol-1,2-cyclic-phosphate 2-inositolphosphohydrolase

25. 3.1.4.51 enzyme   alpha-glucose-1-phosphate phosphodiesterase
                      glucose-1-phospho-D-mannosylglycoprotein phosphodiesterase
                      6-(D-glucose-1-phospho)-D-mannosylglycoprotein glucose-1-phosphohydrolase