在chemdraw软件中,这一区分更为直观。exact mass被标示为单质量,为质谱分析提供精确的同位素质量数据,帮助研究人员确定化合物的精确组成。与此相反,molecular weight则代表了化学分子量,适用于广泛的化学分析,包括但不限于计算溶液浓度、分子比等。两者的应用范围各异。分子量在化学合成、反应机理研究、...
Exact Mass是准确分子量,一般精确到小数点四位 Exact Mass是准确分子量,如果有具体例子介绍一下就更好了:) HBr Exact Mass: 79.93 Mol. Wt:80.91m/e:79.93(100%),81.92(97.3%)
如果你说的是chemdraw里的话,exact mass是monoisotopic mass,molecular weight是化学分子量,前者给质谱...
}elsecout<<"ok "<< ++currentTest <<" # molecular weight\n";if(fabs(atof(vs[2].c_str()) - mol.GetExactMass() ) >1.0e-3) {cout<<"not ok "<< ++currentTest <<" # exact mass incorrect"<<" for molecule "<< mol.GetTitle() <<"\n";cout<<"# Expected "<< atof(vs[2]....
decahydronaphthalene-2,6-dicarboxylic acidChemical Formula: C12H18O4 Exact Mass: 226.12 Molecular Weight: 226.27 m/z: 226.12 (100.0%), 227.12 (13.1%)性质、用途与生产工艺 decahydronaphthalene-2,6-dicarboxylic acidChemical Formula: C12H18O4 Exact Mass: 226.12 Molecular Weight: 226.27 m/z: 226.12...
A method for elucidating the elemental compositions of low molecular weight chemicals by exact mass was developed and tested for 113 chemicals of environmental interest with molecular masses up to ~400 Da. The provisional result was presented at the 53~(rd) ASMS Conference. The latest result ...
Exact determination of the degree of substitution of high molar mass hyaluronan by controlling the conformation in solution Author links open overlay panelDavide Ret, Gökçe Steiner, Stefano Gentilini, Simone KnausShow more Add to Mendeley Share Cite...
Packaging Detail: Name: Carfilzomib CAS#: 868540-17-4 Chemical Formula: C40H57N5O7 Exact Mass: 719.42580 Molecular Weight: 719.91 Elemental Analysis: C, 66.73; H, 7.98; N, 9.73; O, 15.56 Product Description Product Name: Carfilzomib Synonyms: Carfilzomib;N-{(2S)-2-[(Morpholin-4-ylacet...
We report a method of metabolomic profiling of intact tissue based on molecular preservation by extraction and fixation (mPREF) and high-performance chemical isotope labeling (CIL) liquid chromatography mass spectrometry (LC-MS). mPREF extracts metabolit
Summary – Exact Mass vs Molecular Weight Exact mass can be defined as the average mass of the atoms of an element measured in an atomic mass unit. Molecular weight can be defined as the collection of weights of all the atoms in a molecule. The key difference between exact mass and molec...