Test Introduction

ES-MS/MS could be used in a wide variety of applications throughout pharmaceutical, industrial, food, environmental and forensic analysis. Our service provides tools for calculating possible molecular formulas in Natural products using a high-resolution mass spectrum. The aim is to determine all theoretical possible elemental compositions with a mass, which falls into a specified error tolerance of the measured mass

NMR is the most powerful technique used to determine detailed molecular structures of organic compound. ^{1M/sup>H-NMR and 13C-NMR can be applied for structure determination of known compound compared with chemical shift and coupling constant in published data. In order to determine the structure of new compound or much complicated molecule, 2D-NMR technique should be applied for exact structure determination using COSY, HMBC, HMQC, and ROESY technique.}