Profile: ChangChem Co., Ltd. specializes in developing, manufacturing & marketing fine organic compounds and intermediates for pharmaceutical industry. Aromatic aldehydes include phthaldialdehyde, 2-bromo-6-fluorobenzaldehyde, 2-bromo-5-methoxybenzaldehyde, 2-chloro-5-nitrobenzaldehyde, 2-cyanobenzaldehyde and 2-fluoro-4-methoxybenzaldehyde. Phenols include sesamol, vanillylamine hydrochloride, 2-amino-4-tert-butylphenol, 2-amino-3-methylphenol, 2-bromo-6-fluorophenol and 2-chloro-4,6-dinitrophenol.