1.2.1.32 0.42 - 2-aminomuconate 6-semialdehyde 1.2.1.32 1.06 - 2-aminomuconate 6-semialdehyde 1.2.1.32 2300 - 5-chloro-2-hydroxymuconic-6-semialdehyde 1.2.1.32 21900 - 2-hydroxymuconate-6-semialdehyde 1.2.1.32 99300 - 2-hydroxy-5-methyl-muconic-6-semialdehyde