| numero EC | nome accettato |
| EC 1.14.99.1 | prostaglandina-endoperossido sintasi |
| EC 1.14.99.2 | chinurenina 7,8-idrossilasi |
| EC 1.14.99.3 | eme ossigenasi |
| EC 1.14.99.4 | progesterone monoossigenasi |
| EC 1.14.99.7 | squalene monoossigenasi |
| EC 1.14.99.9 | steroide 17alfa-monoossigenasi |
| EC 1.14.99.10 | steroide 21-monoossigenasi |
| EC 1.14.99.11 | estradiolo 6beta-monoossigenasi |
| EC 1.14.99.12 | androst-4-ene-3,17-dione monoossigenasi |
| EC 1.14.99.14 | progesterone 11alfa-monoossigenasi |
| EC 1.14.99.15 | 4-metossibenzoato monoossigenasi (O-demetilante) |
| EC 1.14.99.19 | plasmaniletanolammina desaturasi |
| EC 1.14.99.20 | fillochinone monoossigenasi (2,3-epossidante) |
| EC 1.14.99.21 | Latia-luciferina monoossigenasi (demetilante) |
| EC 1.14.99.22 | ecdisone 20-monoossigenasi |
| EC 1.14.99.23 | 3-idrossibenzoato 2-monoossigenasi |
| EC 1.14.99.24 | steroide 9alfa-monoossigenasi |
| EC 1.14.99.26 | 2-idrossipiridina 5-monoossigenasi |
| EC 1.14.99.27 | juglone 3-monoossigenasi |
| EC 1.14.99.28 | linaloolo 8-monoossigenasi |
| EC 1.14.99.29 | deossiipusina monoossigenasi |
| EC 1.14.99.30 | Carotene 7,8-desaturasi |
| EC 1.14.99.31 | miristoil-CoA 11-(E) desaturasi |
| EC 1.14.99.32 | miristoil-CoA 11-(Z) desaturasi |
| EC 1.14.99.33 | delta12-acido grasso deidrogenasi |
| EC 1.14.99.34 | monoprenil isoflavone epossidasi |
| EC 1.14.99.35 | tiofene-2-carbonil-CoA monoossigenasi |
| EC 1.14.99.36 | beta-carotene 15,15'-monoossigenasi |
| EC 1.14.99.37 | taxadiene 5alfa-idrossilasi |
| EC 1.14.99.38 | colesterolo 25-idrossilasi |