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https://pubchem.ncbi.nlm.nih.gov/compound/9H-Carbazole-3-carboxaldehyde_-9-methyl_-diphenylhydrazone 9H-Carbazole-3-carboxaldehyde, 9-methyl, diphenylhydrazone - PubChem 9H-Carbazole-3-carboxaldehyde, 9-methyl, diphenylhydrazone chemical information summary. carbazolemethylpubchem