This standard specifies the requirements, test methods, inspection rules, marking, packaging, transportation, storage and shelf life of 1,3-dimethyl-3-butenyl 2-methylpropionate (isovalerate). This standard applies to 2-methylpropionic acid-1,3-dimethyl-3-butene prepared by acylation reaction using 4-methyl-4-penten-2-ol and isobutyric anhydride as raw materials. Analyze and evaluate the quality of ester (isovalerate).