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preface to fifteenth edition

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SPECTROSCOPY 7.133<br />

TABLE 7.76<br />

Condensed Table of Mass Spectra (Continued)<br />

Mass numbers (and intensities) of:<br />

Molecular<br />

formula<br />

Name<br />

Parent<br />

peak<br />

Base<br />

peak<br />

Three next most intense peaks<br />

C 5 H 10 O 2-Pentanone 86(16) 43(106) 29(23) 27(23) 57(20)<br />

C 5 H 10 O 3-Pentanone 86(15) 57(87) 29(87) 27(32) 28(9.4)<br />

C 5 H 10 O Ethyl-2-propenyl ether 86(6.2) 41(52) 29(48) 58(44) 57(42)<br />

C 5 H 10 O Ethyl isopropyl ether 86(21) 43(87) 44(69) 41(46) 27(45)<br />

C 5 H 10 O 2-Methyltetrahydrofuran 86(8.9) 71(57) 43(55) 41(40) 27(27)<br />

C 5 H 10 O 2 Tetrahydrofurfuryl alcohol 102(0.02) 71(8.9) 43(6.8) 41(4.8) 27(3.8)<br />

C 5 H 10 O 2 2-Methoxyethyl ethenyl ether 102(3.0) 29(69) 45(58) 15(48) 58(45)<br />

C 5 H 10 O 2 2,2-Dimethylpropanoic acid 102(2.0) 57(83) 41(38) 29(27) 39(12)<br />

C 5 H 10 O 2 2-Methylbutanoic acid 102(0.32) 74(54) 57(34) 29(33) 41(28)<br />

C 5 H 10 O 2 n-Butyl formate 102(0.27) 56(80) 41(48) 31(47) 29(42)<br />

C 5 H 10 O 2 Isobutyl formate 102(0.27) 43(58) 56(48) 41(46) 31(38)<br />

C 5 H 10 O 2 sec-Butyl formate 102(0.17) 45(99) 29(49) 27(32) 41(31)<br />

C 5 H 10 O 2 n-Propyl acetate 102(0.07) 43(176) 61(34) 31(31) 27(26)<br />

C 5 H 10 O 2 Isopropyl acetate 102(0.17) 43(155) 45(50) 27(22) 61(18)<br />

C 5 H 10 O 2 Ethyl propanoate 102(10) 29(151) 57(97) 27(52) 28(24)<br />

C 5 H 10 O 2 Methyl 2-methylpropanoate 102(8.9) 43(69) 71(23) 41(19) 59(17)<br />

C 5 H 10 O 2 Methyl butanoate 102(1.0) 43(53) 74(37) 71(29) 27(23)<br />

C 5 H 10 O 3 Ethyl carbonate 118(0.30) 29(114) 45(80) 31(60) 27(46)<br />

C 5 H 10 S 2-Methylthiacyclopentane 102(37) 87(88) 41(30) 45(29) 59(18)<br />

C 5 H 10 S 3-Methylthiacyclopentane 102(40) 60(45) 41(31) 45(25) 74(23)<br />

C 5 H 10 S Thiacyclohexane 102(43) 87(44) 68(33) 61(32) 41(28)<br />

C 5 H 10 S Cyclopentanethiol 102(19) 41(48) 69(47) 39(26) 67(18)<br />

C 5 H 11 N Piperidine 85(22) 84(43) 57(22) 56(22) 44(17)<br />

C 5 H 11 NO N-Methylmorpholine 101(4.4) 43(18) 42(8.6) 15(3.4) 71(2.9)<br />

C 5 H 11 NO 2 3-Methylbutyl nitrite 117(0.0) 29(75) 41(68) 57(43) 30(42)<br />

C 5 H 12 2,2-Dimethylpropane 72(0.01) 57(126) 41(52) 29(49) 27(20)<br />

C 5 H 12 2-Methylbutane 72(4.7) 43(74) 42(64) 41(49) 57(40)<br />

C 5 H 12 n-Pentane 72(10) 43(114) 42(66) 41(45) 27(39)<br />

C 5 H 12 O 2-Methyl-1-butanol 88(0.18) 57(57) 29(55) 41(53) 56(50)<br />

C 5 H 12 O 3-Methyl-1-butanol 88(0.02) 55(47) 42(42) 43(39) 41(38)<br />

C 5 H 12 O 2-Methyl-2-butanol 88(0.0) 59(43) 55(37) 45(25) 73(22)<br />

C 5 H 12 O 1-Pentanol 88(0.0) 42(41) 55(30) 41(25) 70(23)<br />

C 5 H 12 O Methyl n-butyl ether 88(3.1) 45(211) 56(36) 29(36) 27(28)<br />

C 5 H 12 O Methyl isobutyl ether 88(12) 45(186) 41(30) 29(30) 15(27)<br />

C 5 H 12 O Methyl sec-butyl ether 88(2.0) 52(142) 29(50) 27(27) 41(25)<br />

C 5 H 12 O Methyl tert-butyl ether 88(0.02) 73(119) 41(33) 43(32) 57(32)<br />

C 5 H 12 O Ethyl isopropyl ether 88(2.6) 45(143) 43(46) 73(40) 27(24)<br />

C 5 H 12 O 2 Diethoxymethane 104(2.1) 31(104) 59(99) 29(62) 103(39)<br />

C 5 H 12 O 2 1,1-Dimethoxypropane 104(0.05) 75(84) 73(62) 29(43) 45(37)<br />

C 5 H 12 S 3,3-Dimethyl-2-thiabutane 104(30) 57(83) 41(62) 29(42) 39(16)<br />

C 5 H 12 S 4-Methyl-2-thiapentane 104(37) 41(46) 56(38) 27(29) 39(23)<br />

C 5 H 12 S 2-Methyl-3-thiapentane 104(82) 89(119) 62(79) 43(63) 61(58)<br />

C 5 H 12 S 2-Thiahexane 104(38) 61(77) 56(50) 41(39) 27(33)<br />

C 5 H 12 S 3-Thiahexane 104(30) 75(72) 27(53) 47(50) 62(33)<br />

C 5 H 12 S 2,2-Dimethyl-1-propanethiol 104(31) 57(100) 41(55) 55(48) 29(42)<br />

C 5 H 12 S 2-Methyl-1-butanethiol 104(28) 41(65) 29(44) 57(40) 70(40)<br />

C 5 H 12 S 2-Methyl-2-butanethiol 104(18) 43(88) 71(54) 41(46) 55(34)<br />

C 5 H 12 S 3-Methyl-2-butanethiol 104(23) 61(73) 43(55) 27(33) 55(28)<br />

C 5 H 12 S 1-Pentanethiol 104(35) 42(91) 55(44) 41(39) 70(39)

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