Each compound has different characteristics, and only by selecting the characteristics of the compound suitable for a specific situation can the compound be applied on a large scale. 139756-04-0, name is 1-Methyl-4-(2-propoxybenzamido)-3-propyl-1H-pyrazole-5-carboxamide, This compound has unique chemical properties. The synthetic route is as follows., Computed Properties of C18H24N4O3
Step 9 3-(5-Carbamoyl-1-methyl-3-propyl-1H-pyrazol-4-ylcarbamoyl)-4-propxy-benzenesulfonyl chloride: 2-Methyl-4-(2-propoxybenzoylamino)-5-propyl-2H-pyrazole-3-carboxamide (20 g, 58.1 mmol) was added to chlorosulfonic acid (81.3 g, 698 mmol) at 0 C. and the reaction was warmed to ambient temperature and stirred for 2 hours. The reaction mixture was poured into ice water (800 g) and mechanically stirred for 1 hour to give a white solid, which was filtered and washed with water. Following standard extractive work up, the solvent was evaporated under reduced pressure to yield the title compound (8 g, 31%). 1H NMR (300 MHz, CDCl3) delta 9.19 (s, 1H), 8.97 (s, 1H), 8.19 (t, 1H, J=8.9 Hz), 7.56 (br. s, 1H), 4.35 (t, 2H, J=6.6 Hz), 4.07 (s, 3H), 2.53 (t, 2H, J=7.5 Hz), 2.06-1.94 (m, 2H), 1.78-1.60 (m, 2H), 1.18 (t, 3H, J=7.5 Hz), 0.95 (t, 3H, J=7.2 Hz); LC-MS: m/z=443.1 (M+H)+
Chemical properties determine the actual use. Each compound has specific chemical properties and uses. We look forward to more synthetic routes in the future to expand reaction routes of 139756-04-0.
Reference:
Patent; AUSPEX PHARMACEUTICALS, INC.; US2008/194529; (2008); A1;,
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics