Akiri, Kalyanachakravarthi published the artcileCrystal Structures of Pyridine Sulfonamides and Sulfonic Acids, SDS of cas: 636-73-7, the publication is Crystal Growth & Design (2012), 12(9), 4567-4573, database is CAplus.
Despite the widespread occurrence of pyridinesulfonic acid and pyridinesulfonamide functional groups in drugs and pharmaceuticals, and their use as ligands in metal-organic frameworks, a systematic structural study of their H bonding and mol. packing is lacking. Crystal structures of 2-, 3-, and 4-pyridinesulfonic acids/amides in terms of N+-H···O– H bonds, N-H···O dimer/catemer synthons, and graph set notations are discussed. This model study provides a background for polymorph screening and solid form hunting of pharmacol. active sulfonamides.
Crystal Growth & Design published new progress about 636-73-7. 636-73-7 belongs to pyridine-derivatives, auxiliary class Pyridine,Sulfonic acid, name is Pyridine-3-sulfonic acid, and the molecular formula is C5H5NO3S, SDS of cas: 636-73-7.
Referemce:
https://en.wikipedia.org/wiki/Pyridine,
Pyridine | C5H5N – PubChem