Yamada, Masanori published the artcileProton conductivity of zwitterionic-type molecular solids under intermediate temperature and anhydrous conditions, HPLC of Formula: 636-73-7, the publication is Chemical Physics Letters (2005), 402(4-6), 324-328, database is CAplus.
Anhydrous proton conducting material for polymer electrolyte membrane fuel cell (PEFC) was prepared by the mixing of zwitterionic-type mol. solid 3-pyridinesulfonic acid (PS) and organic acid methylenediphosphonic acid (MP). As a result, PS mol., which has a sulfonic acid and a pyridine group in its structure, showed the proton conductivity of 4 × 10-5 S cm-1 at 160°C under anhydrous condition. Surprisingly, by the mixing of MP to PS material, the PS-MP composite material exhibited a conductivity of 2 × 10-3 S cm-1. Also, the conductivity of PS-MP composite material did not decrease under the heating at 160° for 50 h.
Chemical Physics Letters 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 C11H14O4, HPLC of Formula: 636-73-7.
Referemce:
https://en.wikipedia.org/wiki/Pyridine,
Pyridine | C5H5N – PubChem