Geetha Bolla’s favorite structure is:

Celecoxib cocrystals with syn amides

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Why?

Trimorphic cocrystals of Celecoxib with Valerolactam reported in this study. Even ring size lactam coformer attributed Dimer-Catemer, Dimer-Dimer Synthons where as odd ones resulted hetero synthon. Synthons between the sulphonamide and lactams are explained as even–odd ring size. The present study on sulfonamide−lactams provides a starting point for synthon based crystal engineering of sulfonamide drugs. Single crystal X-ray structures of celecoxib cocrystals are reported for the first time with GRAS lactams—Geetha Bolla

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