the fast atom bombardment and electron ionization mass spectra of diisopropylphosphoryl protected amino acids showed similar fragmentation pathways, in which elimination of neutral mols .
二异丙基磷酰基氨基酸的快原子轰击和电子电离质谱都有相似的丢失两分子丙烯和一分子甲酸的碎裂过程。
electron spray ionization mass spectrometry(esi-ms) and electron ionization mass spectrometry(ei-ms) were used to elucidate the structure and fragmentation pathway of cryptotanshinone(ct).
electron ionization mass spectrometry(ei-ms) and electron spray ionization mass spectrometry(esi-ms) were used for the elucidations of the structure and fragmentation pathway of phencynonate(pc).