MASS-SPECTRA OF PICOLINIC, NICOTINIC AND ISONICOTINIC ACIDS AND OF THEIR RESPECTIVE N-OXIDES

被引：7

作者：

DEOLIVEIRA, SM ^{[1
]}

DEGIOVANI, WF ^{[1
]}

ROMERO, JR ^{[1
]}

MILLER, J ^{[1
]}

机构：

[1] UNIV FED PARAIBA,TECHNOL FARMACEUT LAB,BR-58059 JOAO PESSOA,PARAIBA,BRAZIL

来源：

ORGANIC MASS SPECTROMETRY | 1991年 / 26卷 / 10期

关键词：

D O I：

10.1002/oms.1210261009

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

Mass spectra of picolinic, nicotinic and isonicotinic acids and of their respective N-oxides are presented. Picolinic acid and its N-oxide demonstrate the facile loss of carbon dioxide and low-intensity molecular ions. Fragmentation is relatively simple. Nicotinic and isonicotinic acids show very similar fragmentation patterns. For both, the molecular ion is the base peak. The fragmentations of nicotinic acid N-oxide and of isonicotinic acid N-oxide are more complex than those of the previous four compounds, but are similar to each other.

引用

页码：855 / 856

页数：2