I found the field of Thermodynamics; Chemistry very interesting. Saw the article Mechanochemical synthesis, characterization and thermal study of new cocrystals of ciprofloxacin with pyrazinoic acid and p-aminobenzoic acid published in 2020. Name: Pyrazine-2-carboxylic acid, Reprint Addresses Caires, F (corresponding author), Sao Paulo State Univ, Inst Chem, UNESP, Araraquara, Brazil.; Caires, F (corresponding author), Sao Paulo State Univ, Sch Sci, UNESP, Bauru, Brazil.. The CAS is 98-97-5. Through research, I have a further understanding and discovery of Pyrazine-2-carboxylic acid
Novel cocrystals of ciprofloxacin with pyrazinoic acid and p-aminobenzoic acid in the 1:1 stoichiometric ratio were obtained by the mechanochemical method, under conditions of liquid-assisted grinding (LAG/ethanol) and neat grinding. They were characterized by powder X-ray diffractometry, infrared spectroscopy, simultaneous thermogravimetry, differential thermal analysis, differential scanning calorimetry (DSC) and DSC-Microscopy system. The results confirmed the successful synthesis of the cocrystals and indicated the functional groups responsible for the formation of the new supramolecular synthons. In addition, from the thermal analysis, it was possible to evaluate the thermal stability, composition, crystallization processes during heating, polymorphic transitions and construct the binary phase diagrams.
Welcome to talk about 98-97-5, If you have any questions, you can contact de Almeida, AC; Ferreira, PO; Torquetti, C; Ekawa, B; Carvalho, ACS; dos Santos, EC; Caires, F or send Email.. Name: Pyrazine-2-carboxylic acid
Reference:
Patent; Chevron Research Company; US4732894; (1988); A;,
Pyrazine – Wikipedia,
Pyrazine | C4H4N2 – PubChem