Category:EC 1.2 Oxidoreductases acting on the aldehyde or oxo group of donors. Subcategories This category has the following 8 subcategories, out of 8 total. E EC 1.2.1 (81 P) EC 1.2.2 (5 P) EC 1.2.3 (12 P) EC 1.2.4 (6 P) EC 1.2.5 (1 P) EC 1.2.7 (9 P) EC 1.2.99 (6 P)Σ EC 1.2 stubs (80 P)