1.3.99.4	3-oxosteroid 1-dehydrogenase	-	
1.3.99.5	3-oxo-5alpha-steroid 4-dehydrogenase (acceptor)	-	
1.3.99.6	3-oxo-5beta-steroid 4-dehydrogenase	-	
1.3.99.8	2-furoyl-CoA dehydrogenase	-	
1.3.99.14	cyclohexanone dehydrogenase	-	
1.3.99.16	Isoquinoline 1-oxidoreductase	-	
1.3.99.17	quinoline 2-oxidoreductase	-	
1.3.99.18	quinaldate 4-oxidoreductase	-	
1.3.99.19	quinoline-4-carboxylate 2-oxidoreductase	-	
1.3.99.23	all-trans-retinol 13,14-reductase	-