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CAS : 1521-41-1
CAS: 192575-19-2 Chemical Name: Pyridoxal phosphate-6-azo(benzene-2,4-disulfonic acid) tetrasodium salt; 4-[[4-Formyl-5-hydroxy-6-methyl-3-[(phosphonooxy)methyl]-2-pyridinyl]azo]-1,3-benzenedisulfonic acid tetrasodium salt