GCMS analysis comments for sample AE03915, March 2002

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Data File : C:\MSDCHEM\l\DATA\031702\3915RE.D Vial: 24 Acq On : 18 Mar 2002 5:12 am Operator: McLean Sample : 3/14/02RE EXT Inst : Instrumen Mise : Multiplr: 1.00 MS Integration Params: LSCINT.P

Quant Method : C:\MSDCHEM\l\5973N\5080302.M (RTE Integrator) Title : Quantitation For Method 508gcscan Library : C:\DATABASE\WILEY7N.L

Peak Number 1 2-Pentanone, 4-hydroxy-4-me... Concentration Rank 1

R.T. EstConc Area Relative to ISTD R.T. 5.62 7.48 ug/L / 2218180 1,4-Dichlorobenzene-d4 9.54

Hit# of 5 Tentative ID MW MolForm CAS# Qual

l 2-Pentanone, 4-hydroxy-4-methyl-... 116 C6H12O2 000123-42-2 74 2 2-Pentanone, 4-hydroxy-4-methyl-... 116 C6H12O2 000123-42-2 74 3 2-Pentanone, 4-hydroxy-4-methyl-... 116 C6H12O2 000123-42-2 64 4 2-Pentanone, 4-hydroxy-4-methyl-... 116 C6H12O2 000123-42-2 56 Abundance Scan 281 (5.625 min): 3915RE.D (-) m/z 59.10 100.00% 59

5000

101 • j ■ ' 5.20 5.40 5.60 5.80 6.00 | 0 ■ i ' ■ ' ■ । ■ ■ * * । ■ —51+ ■ ■ 69T । । । । । T 83 — । । । + mmP m/z 58.10 33.57%| m/z— > 20 30 40 50 60 70 80 90 100 110 120 130 140 Abundance #16599: 2-Pentanone, 4-hydroxy-4-methyl- (CAS) $S Diaceton... 43

59 5000 5.20 5.40 5.60 5.80 6.00 | 101 m/z 101.10 24.86% 31

m/z-> 0 .... 44514 70 83 .1 112 20 30 40 50 60 70 80 90 100 110 120 130 140 »I • ■'1 i ■ । ' i' ■'111'' ' i1 ■ ■ ■ i ■ ■ ■ ■ I ■'111 ■

Abundance #16606: 2-Pentanone, 4-hydroxy-4-methyl- (CAS) $$ Diaceton... 43

TOUT........ " T TTTTT 5.20 5.40 5.60 5.80 6.00 5000 m/z 56.10 9.43% 59

101 36J, 50 66 „ 83 | 133 0 ' i1 ■ ■11 ■ ■ ■ ■ I 11 ■ ’ i1 *TTT ' ।' 1111111 >■ । TIT ■ >»i ■ ■ ■ ■ 1’’ 111 11 '1 1 1 1 1 11 1 m/z-> 20 30 40 50 60 70 80 90 100 110 120 130 140 Abundance #16593: 2-Pentanone, 4-hydroxy-4-methyl- (CAS) SS Diaceton... 43 5.20 5.40 5.60 5.80 6.00 m/ z 98.10 5.29

5000 59

31 101

m/z-> 0 —4 +51+ 20 70 83 | I 1‘*10—100u—uuIIutuw‘]uuur T—n—I,r 50 60 70 80 90 100 110 120 130 140 30 40 i ' ' ' ' i ' 1 ■ ■ i' ' 5.20 5.40 5.60 5.80 6.00 AATr

3915RE.D 5080302.M Wed Mar 20 11:30:32 2002 Page 3

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