MSsturctureidentifyObjective: To establish an HPLC-ESI-IT-MSn method for the study of impurity profile of sisomicin sulfate. Methods: The analysis was performed by an LC-Ion Trap MSn system of Agilent 1100 LC /MSD,using a\nGemini NX C18(4.6 mm脳150 mm,5 渭m) column as stationery ...
目的 建立加速溶剂萃取-高效液相色谱-电喷雾-离子阱质谱(ASE-HPLC-ESI-IT/MS)联用技术分析淡豆豉中大豆异黄酮类化合物的方法.方法 采用加速溶剂萃取仪,以70%(体积分数)乙醇为溶剂提取淡豆豉中的大豆异黄酮类成分,色谱柱为XAqua C18柱(250 mm×4.6 mm,5μm),流动相为乙腈-0.1%(体积分数)甲酸,梯度洗脱.离子...
Chemical profiling is always the first task in the standardization and modernization of Traditional Chinese Medicine. HPLC and LC-MS were employed to find out the common chromatographic peaks in vari...
目的 建立加速溶剂萃取-高效液相色谱-电喷雾-离子阱质谱(ASE-HPLC-ESI-IT/MS)联用技术分析淡豆豉中大豆异黄酮类化合物的方法.方法 采用加速溶剂萃取仪,以70%(体积分数)乙醇为溶剂提取淡豆豉中的大豆异黄酮类成分,色谱柱为XAqua C18柱(250 mm×4.6 mm,5μm),流动相为乙腈-0.1%(体积分数)甲酸,梯度洗脱.离子...
HPLC-MS-ESI-ITflavonoidsSun Protection Factorphotoprotective activityThe development of photoprotective products has been highly focused on natural ingredients, and exposure to ultraviolet (UV) radiation is also related to the production of reactive oxygen species (ROS), which are extremely damaging to ...
OLIGOMER ANALYSIS OF NON-IONIC CELLULOSE ETHERS BY QUANTITATIVE (HPLC-)ESI-IT MSNon-ionic cellulose ethers such as methyl cellulose (MC) and hydroxyalkyl methyl celluloses (HAMC) have a wide field of application in food-, pharmaceutical- and cosmetic producing industry. To get a deep insight ...
Quantification of fatty acids in cave drip water and speleothems using HPLC-ESI-IT/MS - Devel- opment and validation of a selective method. Anal. Bioanal. Chem. 406, 3167e3177.Bosle, J., Mischel, S., Schulze, A.-L., Scholz, D., Hoffmann, T., Quan- tification of low molecular ...
In this paper, we developed and validated a simple, accurate, and reliable analytical HPLC-UV-ESI-IT-MS method, carried out on a C18 column, which is potentially suitable to quantify carnosol in plant extracts. The procedure complied with the established ICH validation...
YANG H,LIN W,ZHANG J,et al.Metabonomic a- nalysis of the toxic effects of TM208in rat urine by HPLC-ESI-IT-TOF/MS[J].J Chromatogr B Analyt Technol Biomed Life Sci,2014,959:49-54.Yang, H.; Lin, W.; Zhang, J.; Lin, W.; Xu, P.; Li, J.; Ling, X. Metabonomic analysis ...
to separate and characterize simultaneously the polyphenolic compounds in aqueous and ethanolic rooibos extracts using high-performance liquid chromatography coupled to electrospray ionization time-of-flight mass spectrometry (HPLC-ESI-TOF-MS) and ion trap multiple mass spectrometry (HPLC-ESI-IT-MS(2))....