Protocatechuic acid, the substance responsible for the hardening of the cockroach ootheca.
D000485:Allergens; D000818:Animals; D003058:Cockroaches; D005260:Female; D006801:Humans; D062385:Hydroxybenzoates; D007313:Insecta; D010060:Ovulation
D000485:Allergens; D062385:Hydroxybenzoates; C009091:protocatechuic acid
ACID/protocatechuic; COCKROACHES; INSECTS; OOTHECA; OVULATION