Molecular Formula | C17H19NO |
Molar Mass | 253.34 |
Density | 1.0078 (rough estimate) |
Boling Point | 396.54°C (rough estimate) |
Storage Condition | 2-8°C |
Refractive Index | 1.5400 (estimate) |
Physical and Chemical Properties | Chemical properties Its hydrochloride is white crystalline powder. Melting point 238-242 ℃. Soluble in water, chloroform and methanol. It tastes bitter. |
Use | Uses this strain of non-addictive analgesics, with muscle relaxant effect. Suitable for all kinds of postoperative pain, cancer pain, visceral smooth muscle colic, etc. For postoperative pain, cancer pain, acute external pain treatment, also suitable for acute gastritis, biliary ascariasis, ureteral calculi and other visceral smooth muscle colic |
use
Pingtongxin (nefopam, Nefopam), the chemical name is 5-methyl -1-phenyl -3,4,5, 6-tetrahydro-1H-2, 5-oxynitrogen benzoxine, It is a non-narcotic analgesic first synthesized by Klohs et al. in 1972. Subsequently, the drug was widely used in Europe, North America, South America and other countries.
production method
The reaction of 2-benzoylbenzoic acid with thionyl chloride, and then with 2-methylaminoethanol to prepare 2-[[N-(2-hydroxyethyl)-N-methyl] amine] methyl diphenylmethanol, it is heated with p-toluenesulfonic acid and benzene to evaporate the benzene, and the resulting oil is alkalized to obtain the nefopam salt.