129356-74-7

Basic information

• Product Name: Nefopam trideuteriomethioiodide
• CAS NO: 129356-74-7
• Molecular Weight: 398.259
• Mol File: 129356-74-7.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: Nefopam trideuteriomethioiodide(CAS DataBase Reference)
• NIST Chemistry Reference: Nefopam trideuteriomethioiodide(129356-74-7)
• EPA Substance Registry System: Nefopam trideuteriomethioiodide(129356-74-7)

Safety Data

• Hazardous Substances Data: 129356-74-7(Hazardous Substances Data)

Upstream product

• 13669-70-0 nefopam 
• 865-50-9 iodomethane-d3 

Relevant articles and documents

1H and 13C NMR Conformational Studies on Quaternary Nitrogen Derivatives of the Analgesic Drug Nefopam

Nitrogen quaternization in the analgesic nefopam by either N-trideuteriomethylation or N-oxidation affords reaction product diastereoisomeric mixtures differing in N-configuration.The axial to equatorial N-CH3 product ratios were found to be ca. 3 : 2 (N-trideuteriomethylation) and approximately equimolar (ca. 48 : 52, N-oxidation).Both diastereomeric N-oxides have boat-(flattened chair) conformations of the octagonal ring in which the phenyl group is exo-oriented.The quaternary ammonium salt showed considerable line broadening in the 1H NMR spectrum owing to rapid conformational equilibration.The same boat-(flattened chair) conformation is clearly the preponderant contributor to the time-averaged structure of nefopam methioiodide in CD2Cl2 solutions, similar to the case for the equatorial N-methyl isomer of the parent hydrochloride salt.Conformational assignments were based on the vicinal coupling constants in the -OCH2CH2N- fragment and on the finding of an NOE intensity enhancement for the benzhydrylic-H on irradiation of the equatorially oriented -OCH.