et al. Effects of alanine and glutamine administration on the inhibition of liver regeneration by acute ethanol treatment. Alcohol Alcohol. Suppl. 1b, 41–45 (1993). Article CAS PubMed Google Scholar Murakami, H., Ito, M., Furukawa, Y. & Komai, M. Leucine accelerates blood ethanol ...
叔丁氧羰基-L-丙氨酸结构式 常用名 叔丁氧羰基-L-丙氨酸 英文名 N-(tert-Butoxycarbonyl)-L-alanine CAS号 15761-38-3 分子量 189.209 密度 1.1±0.1 g/cm3 沸点 320.9±25.0 °C at 760 mmHg 分子式 C8H15NO4 熔点 79-83 °C(lit.) MSDS 中文版 美版 闪点 147.9±23.2 °C ...
LC–ESI-MSHILICSIMWe developed a simple and effective analysis procedure that includes pretreatment and determination methods for -methylamino--alanine (BMAA), a cyanobacterial neurotoxin. BMAA may be produced by all known groups of cyanobacteria living in freshwater as well as marine environments. In...
Materials and methods Chemicals β-N-Methylamino-l-alanine, chloroform (analytical grade), ammonium formate (LC–MS grade), formic acid (99%, LC–MS grade), 2,2-dimethyl-2-silapentane-5-sulfonate sodium salt (DSS) and deuterium oxide (D2O, 99% D) were obtained from Sigma-Aldrich (...
How to qualitative and quantitative analysis ofL-1-Naphthylalanine is a key issue in the field of chemical analysis. There are currently many methods, including thin-layer chromatography, liquid chromatography, and LC-MS methods for the latest development, which provides a variety of and accurate ...
In the first one, acids or bases are used producing a chemical hydrolysis that can have harmful effects on the quality of the hydrolysate since they can destroy l-amino acids and form toxic compounds such as lysinoalanine. In the enzymatic reaction, food-grade proteases cleave the peptide ...
Mass spectrometric analysis was conducted using Xevo G2 Quadrupole TOF MS (Waters, Milford, MA, USA) with electrospray ionization (ESI) in positive ion mode. The spray voltage, source temperature and the desolvation temperature were set at 0.5 kV, 120 °C and 450 °C, respectively. ...
然后向混合物中加入10%柠檬酸(50ml),随后加入EtOAc并用水和盐水萃取。将有机提取物干燥、过滤并浓缩。5.31g(77%)标题化合物N-Boc-顺式-4-羟基-L-脯氨酸。MS(ESI)m/z 232(m+H)+。合成路线如图2所示。 图3 N-Boc-顺式-4-羟基-L-脯氨酸的合成路线[4]。
(2-thienyl)-DL-alanine (Fluka) as the internal derivatization control were used as a standard. To be in linear part of calibration curve, all samples were diluted 20 times. Using an automated pre-column derivatization program, the primary amine groups in the mixture were derivatized withortho-...
Dietary L-lysine strongly suppresses plasma intact parathyroid hormone in adenine rats and supports a proper bone-vascular axis. The conserved orientation of the femoral apatite in group Lys also evidences the bone-protective effects of L-lysine. Dietary L-lysine elevates plasma alanine, proline, ...