title: Crystal structure of 4-{[(naphthalen-2-yl)sulfonyl-amino]-meth-yl}cyclo-hexa-necarb-oxy-lic acid.
abstract: The title compound, C18H21NO4S, is a new sulfonamide derivative of tranexamic acid. In the crystal, mol-ecules form inversion dimers via O-H⋯O hydrogen bonds involving the carb-oxy-lic acid groups. Hydrogen bonding between the sulfonamide N-H group and the carb-oxy-lic acid O atom assembles the dimers into thick layers parallel to (100). The naphthalene groups of adjacent layers are arranged in a herring-bone motif. There are C-H⋯π inter-actions between the naphthalene rings of neighbouring layers.
authors.affiliation: Department of Chemistry, Institute of Natural Sciences, University of Gujrat, Gujrat 50700, Pakistan.
authors.forename: Muhammad
authors.initials: M
authors.lastname: Danish
authors.affiliation: Department of Physics, University of Sargodha, Sargodha, Punjab, Pakistan.
authors.forename: Muhammad Nawaz
authors.initials: MN
authors.lastname: Tahir
authors.affiliation: Department of Chemistry, Institute of Natural Sciences, University of Gujrat, Gujrat 50700, Pakistan.
authors.forename: Asif
authors.initials: A
authors.lastname: Hussain
authors.affiliation: Department of Chemistry, Institute of Natural Sciences, University of Gujrat, Gujrat 50700, Pakistan.
authors.forename: Muhammad
authors.initials: M
authors.lastname: Ashfaq
authors.affiliation: Department of Chemistry, Institute of Natural Sciences, University of Gujrat, Gujrat 50700, Pakistan.
authors.forename: Muhammad Nadeem
authors.initials: MN
authors.lastname: Sadiq
keywords: C—H⋯π inter­actions; crystal structure; hydrogen bonding; sulfonamides; tranexamic acid
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