5.3.2.6 6.75 - assay at 718826 5.3.2.6 7.3 - 4-oxalocrotonate tautomerase assay at 718844 5.3.2.6 7.3 - assay at 704310, 718830, 718847, 718874, 719633, 719634, 719636, 721792