GCMS analysis results for sample AD31644, Jan 28 2002

NYC 9/11 Public Portal Document LLDLdLy sed.CIi tompounu Kepor L

Data File : C: \MSDCHEM\1\5973N\02JAN17\31644.D Vial: 4 • Acq On : 17 Jan 2002 5:19 pm Operator: Sample : 508 scan Inst : Instrumen Mise : January 17, 2002 Multiplr: 1.00 MS Integration Params: LSCINT.P Quant Method : C:\MSDCHEM\1.. .\SCAN508.M (RTE Integrator) Title : 508 scan method Library : C:\DATABASE\WILEY7N.L ********************************************************************* Peak Number 3 Butanoic acid, 2-methyl-, m.. Concentration Rank 9 R.T. EstConc Area Relative to ISTD R.T.

4.63 0.13 ug/L 53910 1,4-Dichiorobenzene-d4 9.71 Hit# Of 5 Tentative ID MW MolForm CAS# Qual l Butanoic acid, 2-methyl-, methyl... 116 C6H1202 000868-57-5 38 2 Butanoic acid, 2-methyl-, methyl... 116 C6H12O2 000868-57-5 37 3 Butanoic acid, 2-methyl-, methyl... 116 C6H1202 000868-57-5 37 4 Butanoic acid, 2-methyl-, methyl... 116 C6H12O2 000868-57-5 37 Abundance Scan 110 (4.629 min): 31644.D (-) m/z 41.10 100.00% 41 88

1 ( 57 71

5000 101 A/A/A I ‘ • * « । » » t I । * « I * | » > r » j ! « «' 4.20 4.40 4.60 4.80 5.00 49 niz-> 0- •1***1*‘I* ■ • i । i • 1 • i ■ ■ ■ ■ i 4 i ■ ■ ■ ■ i ■ • ' ■ i • ■ ■ ■ i ■ 1 m/Z 88.10 95.46% 20 30 40 50 60 70 80 90 100 110 120 Abundance #16439: Butanoic acid, 2-methyl-, methyl ester (CAS) $$ Me... 57 83

5000 41 4.20 4.40 4.60 4.80 5.00 ' 101 Wz 71.10 84.98% 69 O—T ■ i 1 ' ■ ■ i • ■ ■ ■ i ■ ‘ | ......... I, ................. 1 'I 1 1 1 1 I 1 1 1 1 I ' 11 i • • • 1 i 1 ' ■ • I ■ ■ ■ ■ i ■ ■ miz-> 20 30 40 50 60 70 80 90 100 110 120 Abundance #16441: Butanoic acid, 2-methyl-, methyl ester (CAS) $$ Me... 88 57 4.20 4.40 4.60 4.80 5.00 5000 m/z 57.10 82.84% 41 29 101 69 0- ■ i ■ ■ ' ■ I ' 1 1 ' r1 1 ' 1 I ' ' 1 ' I ‘ ‘ ‘ • I • ‘ * • I ‘ ‘ 1................ 1 I • ■ ■ 1 i 1 ■ ‘ ■ i • ■ ■ • i ■ ■ niz-> 20 30 40 50 60 70 80 90 100 110 120 Abundance #16436: Butanoic acid, 2-methyl-, methyl ester (CAS) $$ Me... 57 88 4.20 4.40 4.60 4.80 5.00 m/z 39.10 37.54% 5000

27 101

miz—> 0■ i ‘ ‘ ' i 33 ■ 1 i ' ■ ■ ■ i ■ ’ ■T' 69 , 116 1 -'i1 i ■ ■ ■ 1 i 1 ’ ■ 1 i ■ ■ 1 ■ i ‘ ■ N.A... ..A 20 30 40 50 60 70 80 90 100 110 120 4.20 4.40 4.60 4.80 5.00

31644.D SCAN508.M Tue Jan 22 08:37:17 2002 Page 5

NYC-WTC_000049998