Conformational polymorphism VI: The crystal and molecular structures of Form II, Form 111, and Form V of 4-Amino-N-2-pyridinylbenzenesulfonamide (Sulfapyridine)

I Bar, J Bernstein - Journal of pharmaceutical sciences, 1985 - Elsevier
The crystal structures of three crystalline forms of 4-amino-N-pyridinylbenzenesulfonamide
(sulfapyridine) have been determined by X-ray single crystal structure analysis. Form II …

Polymorph IV of 4-amino-N-2-pyridinylbenzenesulfonamide (sulfapyridine)

J Bernstein - Acta Crystallographica Section C: Crystal Structure …, 1988 - journals.iucr.org
CllHllN302S, Mr= 249.3, monoclinic, P21/c, a= 13.56 (4), b= 6.48 (1), c= 14.12 (3)/1~, fl=
113.7 (1), V= lla6. 4 (44) A3, Z= 4, Dx= 1.457 g cm-3, 2 (Mo Ka)= 0.70926/~,~ t= 2.29 cm-1, F …

Using small molecule crystal structure data to obtain information about sulfonamide conformation

A Parkin, A Collins, CJ Gilmore… - … Section B: Structural …, 2008 - journals.iucr.org
Understanding the conformations adopted by the sulfonamide group is essential to the
understanding of the way that sulfa drugs act upon the body. The relative energies of these …

Polymorphism in sulfonamides

SS Yang, JK Guillory - Journal of pharmaceutical sciences, 1972 - Elsevier
An evaluation of entropies and enthalpies of transition and fusion and a comparison of X-ray
diffraction patterns and IR spectra of polymorphic forms of structurally related compounds …

Sulfapyridine (polymorph III), sulfapyridine dioxane solvate, sulfapyridine tetrahydrofuran solvate and sulfapyridine piperidine solvate, all at 173 K

J Pratt, J Hutchinson… - … Section C: Crystal …, 2011 - journals.iucr.org
The X-ray crystal structures of solvates of sulfapyridine have been determined to be
conformational polymorphs. 4-Amino-N-(1, 2-dihydropyridin-2-ylidene) benzenesulfonamide …

Crystal structure of 4-phenyl-piperazine-1-sulfonamide

M BERREDJEM, R BOUASLA, NE AOUF… - X-ray Structure …, 2010 - jstage.jst.go.jp
The structure of 4-phenyl-piperazine-1-sulfonamide was determined by X-ray
crystallography. The compound crystallized in a monoclinic system and was characterized …

Hydrogen bonding in sulfonamides

DA Adsmond, DJW Grant - Journal of pharmaceutical sciences, 2001 - Wiley Online Library
The hydrogen‐bond connectivity in 39 sulfonamide crystal structures has been deciphered
and described using graph set notation. The hydrogen‐bond connectivity observed is used …

[PDF][PDF] Physical properties of four polymorphic forms of sulfanilamide I: Densities, refractive indexes, and X‐ray diffraction measurements

HO Lin, NC Baenziger, JK Guillory - Journal of Pharmaceutical …, 1974 - researchgate.net
Physical properties of four polymorphic forms of sulfanilamide I: Densities, refractive indexes,
and X-ray diffraction measureme Page 1 Physical Properties of Four Polymorphic Forms of …

Physicochemical and structural study of sulfamethazine

L Maury, J Rambaud, B Pauvert… - Journal of …, 1985 - Wiley Online Library
We have shown by several physicochemical methods that the existence of different crystal
habits for a given molecule does not necessarily imply polymorphism. For sulfamethazine …

4-Amino-N-(2-pyrimidinyl) benzenesulfonamide

MK Kokila, P Puttaraja, MV Kulkarni… - … Section C: Crystal …, 1995 - journals.iucr.org
The structure of the title compound, Cl0HloN402S, has been determined. The two six-
membered rings are planar and folded towards each other making an acute angle of 74.9 …