"5-Bromo-6-methoxy-?-(methyl-13CD3)-2-naphthaleneacetic Acid; (±)-5-Bromo-6-methoxy-?-(methyl-13CD3)-2-naphthaleneacetic Acid; (±)-5-Bromo-6-methoxy-?-(methyl-13CD3)-2-naphthaleneacetic Acid; (±)-5-Bromonaproxen-13CD3;","5-Bromo-6-methoxy-?-(methyl-13CD3)-2-naphthaleneacetic Acid; (±)-5-Bromo-6-methoxy-?-(methyl-13CD3)-2-naphthaleneacetic Acid; (±)-5-Bromo-6-methoxy-?-(methyl-13CD3)-2-naphthaleneacetic Acid; (±)-5-Bromonaproxen-13CD3;",Naproxen Stable Isotopes