catecholamines

https://doi.org/10.1351/goldbook.C00902
4-(2-Aminoethyl)pyrocatechol [4-(2-aminoethyl)benzene-1,2-diol] and derivatives formed by substitution.
C00902.png
Source:
PAC, 1995, 67, 1307. 'Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)' on page 1327 (https://doi.org/10.1351/pac199567081307)