Vanillylmandelic Acid

**Semantic type:** Organic Chemical

**Definition:** An aromatic ether that is a product of catecholamine metabolism. Vanillylmandelic acid may be a used as marker for tumors that secrete catecholamines, such as neuroblastoma or pheochromocytoma.

**Synonyms:** - 2-Hydroxy-2-(4-hydroxy-3-methoxyphenyl)acetic Acid - 3-Methoxy-4-hydroxymandelic Acid - 4-Hydroxy-3-methoxymandelic Acid - Benzeneacetic Acid, 4-Hydroxy-3-methoxy- - VMA - Vanillyl Mandelic Acid - Vanilmandelic Acid