| phthalyl | <chemistry> The hypothetical radical of phthalic acid. Origin: Phthalic + -yl. Source: Websters Dictionary (01 Mar 1998) |
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| phthalylsulfacetamide | N1-acetyl-N4-phthalylsulfanilamide;a sulfonamide used in the treatment of enteric infections. (05 Mar 2000) |
| phthalylsulfathiazole | 2-(N4-Phthalylsulfanilamido)thiazole;a sulfonamide used in the treatment of enteric infections. (05 Mar 2000) |