N-Acetyldopamine dimer-1 is a 2-(3',4'-dihydroxyphenyl)-1,4-benzodioxane derivative. N-Acetyldopamine dimer-1 is optically active, can be isolated from crude agent "Zentai," a cast-off shell of the cicada of Cryptotympana sp. (Cicadidae).

Rose bengal lactone (C.I. Solvent Red 141) is a rose bengal lactone stain commonly used to stain the nuclei of plant and animal cells.

Methylsuccinic acid is a normal metabolite found in human fluids. Increased urinary levels of Methylsuccinic acid (together with ethylmalonic acid) are the main biochemical measurable features in ethylmalonic encephalopathy a rare metabolic disorder with an autosomal recessive mode of inheritance that is clinically characterized by neuromotor delay hyperlactic acidemia recurrent petechiae orthostatic acrocyanosis and chronic diarrhea.