Valerenic acid3569-10-6100 % similar Artemisinic acid80286-58-437 % similar (E)-2-Methyl-2-pentenoic acid16957-70-333 % similar 2-Methyl-2-pentenoic acid3142-72-133 % similar Angelic acid565-63-933 % similar Tiglic acid80-59-133 % similar Citraconic acid498-23-731 % similar Crocetin27876-94-431 % similar