MASS SPECTROSCOPY - COMMON FRAGMENTS

Common Fragments    1 H  14 CH2 15 CH3 16 O  17 OH  18 H2O, NH4 19 F  26 CN, C2H2 27 C2H3 28 C2H4, CO 29 C2H5, CHO 30 CH2NH2 31 CH2OH 32 O2 33 SH  34 H2S 35 Cl  36 HCl  39 C3H3 41 C3H5 42 C3H6, C2H2O 43 C3H7, CH3C=O 45 CH3CHOH, CH2CH2OH 46 NO2 47 CH2SH 48 CH3S + H 49 CH2Cl 51 CHF2 53 C4H5 54 CH2CH2CN 55 C4H7 56 C4H8 57 C4H9, C2H5C=O 58 CH3C(=O)CH2 + H, C2H5CHNH2 59 C3H6OH, CH2OC2H5 65 C5H5 66 C5H6 67 C5H7 68 CH2CH2CH2CN 69 C5H9, CF3 70 C5H10 71 C5H11, C3H7C=O 76 C6H4 77 C6H5 78 C6H5 + H 79 C6H5 + 2H, Br

Common Fragment Losses  15 •CH3 16 O, •NH2 17 HO•  18 H2O 19 F•  20 HF  26 CHCH, &bull  27 CH2=CH•, HCN 28 CH2=CH2, CO 29 CH3CH2•, •CHO 30 NH2CH2•, CH2O, NO, C2H6 31 •OCH3, •CH2OH 32 CH3OH, S 33 HS•, •CH3 + H2O 34 H2S 35 Cl•  36 HCl, 2H2O 37 H2Cl 38 C3H2, C2N, F2 39 C3H3, HC2N 40 CH3CCH 41 CH2=CHCH2• 42 CH2=CHCH3, CH2=C=O 43 C3H7, CH3C•=O 44 CH2=CHOH, CO2, N2O, CONH2 45 CH3CHOH, CH3CH2O•, CO2H, CH3CH2NH2 46 H2O + CH2=CH2, CH3CH2OH 47 CH3S• 48 CH3SH 49 •CH2Cl 52 C4H4 53 C4H5 54 CH2=CH-CH-CH2 55 CH2=CHCHCH3 56 CH2=CHCH2CH3 57 C4H9•, C2H5CO 60 C3H7OH 63 •CH2CH2Cl 71 C5H11• 73 CH3CH2OC(=O)• 74 C4H9OH 75 C6H3 76 C6H4 77 C6H5 78 C6H6 91

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