DEP GCMS data table, Jan-Feb 2002

NYC 9/11 Public Portal Document Library Search Compound Report Data File : C:\MSDCHEM\1\5973N\02FEB27\02386.D Vial: 2 Acq On : 27 Feb 2002 4:07 pm Operator: Sample : 508 scan Inst : Instrumen Mise : February 2 7, 2002 Multiplr: 1.00 MS Integration Params: LSCINT.P Quant Method : C:\MSDCHEM\1...\HP022102 .M (RTE Integrator) Title : 508 scan method Library : C:\DATABASE\WILEY7N.L Peak Number 1 Butanoic acid, methyl ester Concentration Rank 5

R.T. EstConc Area Relative to ISTD R.T. 3.62 0.12 ug/L 66914 1,4-Dichlorobenzene-d4 9.72 Hit# of 5 Tentative ID MW MolForm CAS# Qual

1 Butanoic acid, methyl ester 102 C5H10O2 000623-42-7 83 2 Butanoic acid, methyl ester (CAS... 102 C5H10O2 000623-42-7 83 3 Butanoic acid, methyl ester (CAS... 102 C5H10O2 000623-42-7 83 4 Butanoic acid, methyl ester 102 C5H10O2 000623-42-7 83 Abundance Scan 22 (3.622 min): 02386. D (-) m/z 74.00 100.00% 43 74

5000 59 87 i1' " i11111 " " 11 " 11 3.50 3.60 3.70 3.80 3.90 4.00 -- 01 —P— ■ ' i ' 1 1 ■ i ' 1 ■ 1 i ■ ■ ■ 1 i m/z 43.10 97.64% m/z-> 10 20 30 40 50 60 70 80 90 100 110 Abundance #9219: Butanoic acid, methyl ester 4 .......... ........... 74 5000 27 AT i " " i" " i 15 3.50 3.60 3.70 3.80 3.90 4.00 59 87 m/z 71.00 76.74% 33 38 | | 102 0- ■ ■ i ■ ■ ■ 1 i - ■ ■ ■ I ।' i ■' I 111 1 i 1 1 1 1 i 1 1 1 1 i ■ ■ । ■ i ■ ■ ■ ‘ i 1 ■ ■ ■ । m/z-> 10 20 30 40 50 60 70 80 90 100 110 Abundance #9228: Butanoic acid, methyl ester (CAS) $$ Methyl butyrat... 43 74 i111' I " 1111 3.50 3.60 3.70 3.80 3.90 4.00 5000- m/z 59.00 28.65% 59 87

.......................Ill....... I ....... 0- ■ ' i 1 ' 1 1 i ‘ ■ i ■ ' ' 1 i 1 ■ ■ ■ i 1 1 1 1 I 1 1 1 1 r 102 r ■ i ' ' 1 1 i ■ 1 ' ■ i 1 ■ ' 1 । n/z-> 10 20 30 40 50 60 70 80 90 100 110 Abundance #9226: Butanoic acid, methyl ester (CAS) $$ Methyl butyrat... 1' i11 43 74 3.50 3.60 3.70 3.80 3.90 4.00 m/z 87.00 27.36% 5000 59 87 15 27 .......1............ 33 102 0 ■ ■ i 1 1 ■ 1 1 1 1 1 ' 1 1 1 1 ' 1 1 1 1 1 1 1 1 1 I ' 1 TTT+ 1 I 1 1 ' 1 I'lP 1 ■ i"1 ‘ 11 ■'11" "।11"i u’111"11 m/z-> 10 20 30 40 50 60 70 80 90 100 110 3.50 3.60 3.70 3.80 3.90 4.00

)2386.D HP022102.M Thu Feb 28 08:47:09 2002 Page 3

NYC-WTC_000005032