Matrix-assisted laser desorption/ionization (MALDI) mass spectrometry of oligosaccharides and gangliosides normally causes loss of sialic acid, particularly when a-cyano-4-hydroxycinnamic acid is used as the matrix. In addition, the potential signal is split because both positive and, to a greater e
โฆ LIBER โฆ
Direct analysis of samples under ambient condition by high-voltage-assisted laser desorption ionization mass spectrometry in both positive and negative ion mode
โ Scribed by Ren, Xinxin; Liu, Jia; Zhang, Chengsen; Luo, Hai
- Book ID
- 118748627
- Publisher
- John Wiley and Sons
- Year
- 2013
- Tongue
- English
- Weight
- 702 KB
- Volume
- 27
- Category
- Article
- ISSN
- 0951-4198
- DOI
- 10.1002/rcm.6499
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We report that commercially available b-carbolines (nor-harmane (9H-pyrido[3,4-b]indole), harmane (1methyl-9H-pyrido[3,4-b]indole), harmine (7-methoxy-1-methyl-9H-pyrido[3,4-b]indole), harmol (1-methyl-9H-pyrido[3,4-b]indol-7-ol), harmaline (3,4-dihydro-7-methoxy-1-methyl-9H-pyrido[3,4-b]indole) and