3-methoxy-4-hydroxymandelic acid, 4-Hydroxy-3-methoxymandelic acid, HYDROXYMETHOXYMANDELICACID, 3-methoxy-p-hydroxymandelic acid, DL-VANILLOMANDELIC ACID, Vanillinmandelic acid, VANILLYLMANDELIC ACID, DL-Vanillylmandelic acid, Vanilinmandelic Acid, VANILLOMANDELIC ACID, Vanilmandelic acid, Benzeneacetic acid, α,4-dihydroxy-3-methoxy-, VMA, 4-hydroxy-3-methoxy-phenylglycolic acid