19583 RP sodium 19583RP-Na 2-(3-Benzoylphenyl)propionate sodium 3-Benzoyl-alpha-methyl-benzeneacetic acid sodium salt 57495-14-4 BENZENEACETIC ACID, 3-BENZOYL-alpha-METHYL-, SODIUM SALT EINECS 260-770-0 Ketoprofen sodium Sodium 2-(3-benzoylphenyl)propionate Sodium ketoprofen