DEP GCMS data table, Jan-Feb 2002

NYC 9/11 Public Portal Document Library Search Compound Report Data File : C:\MSDCHEM\1\5973N\02FEB27\02385.D Vial: 1 Acq On : 27 Feb 2002 3:17 pm Operator: Sample : 508 scan Inst : Instrumen Mise : February 27, 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 4

R.T. EstConc Area Relative to ISTD R.T. 3.62 0.16 ug/L 71814 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 (CAS... 102 C5H10O2 000623-42-7 83 Abundance Scan 22 (3.622 min): 02385. D (-) m/z 74.00 100.00% 43 74

5000 59 87 "III 11 " " i " " 1111' i' " ' I — 49 ! 3.50 3.60 3.70 3.80 3.90 4.00 0-P- n ' ' ansi | 1 i 1 1 1 1 i ■ 1 1 1 i ' 1 ■ ■ i m/ z 43.10 88.95% m/z-> 10 20 30 40 50 60 70 80 90 100 110 Abundance #9219: Butanoic acid, methyl ester 43 74 5000 27 MA- 15 3.50 3.60 3.70 3.80 3.90 4.00 59 87 m/ Z 71.00 68.02% 33 38 102 0- ————— T ■ ' i ' ' ' ■ i 1 1 i 1 1 1 1 i m/z-> 10 20 30 40 50 60 70 80 90 100 110 Abundance #9228: Butanoic acid, methyl ester (CAS) $$ Methyl butyrat... 43 74 — 3.50 3.60 3.70 3.80 3.90 4.00 5000 m/z 41-10 27.69% 59 87

0- 11 14* 1 111’’ ‘I ...... Il........ 1 ■ ■ i ■ ■ ■ ■ i ■ ■ • ■ । 1I11 102 m/z-> 10 20 30 40 50 60 70 80 90 100 110 Abundance #9222: Butanoic acid, methyl ester (CAS) $$ Methyl butyrat... ■11 ■' " r ' " i' 43 74 3.50 3.60 3.70 3.80 3.90 4.00 m/z 87.00 26.62%

5000 59 87

33 102 mfe-> 0 -II* ’ III * * III’* I I I 10 20 30 40 I1......... 50 1ui 60 TI 11),.. ■ ■ ।■i ■ ■ 1 । 70 80 90 100 110 3.50 3.60 3.70 3.80 3.90 4.00

02385.D HP022102.M Thu Feb 28 08:47:02 2002 Page 3

NYC-WTC_000005012