PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 20468011-2 2010 The method is based on the reaction of diazotized 4-aminoantipyrine (4-AAP) with catecholamines in a basic medium (pH = 10-11) to yield pink-coloured products having absorption maxima at 500, 505 and 480 nm for DO.HCl, VMA and DOB.HCl, respectively. Catecholamines 81-95 serpin family F member 2 Homo sapiens 71-74