Common H Nmr Impurities Chart
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1
2Common 1 H NMR Impurities
From J. Org. Chem., 62, 1997 and additional sources
SOLVENT
CDCl
Acetone
DMSO
C
D
CD
CN
MeOD
D
O
3
6
6
3
2
Residual Solvent Peak
7.26
2.05
2.50
7.16
1.94
3.31
4.79
Acetic Acid
2.13
1.96
1.91
1.55
1.96
1.99
2.08
11.53
Acetone
2.17
2.09
2.09
1.55
2.08
2.15
2.22
Acetonitrile
2.10
2.05
2.07
1.55
1.96
2.03
2.06
Benzene
7.36
7.36
7.37
7.15
7.37
7.33
Benzyl alcohol
4.72
Benzyl bromide
7.39 (m)
7.47 (d)
4.50 (s)
BHT
6.98
6.96
6.87
7.05
6.97
6.92
5.01
-
6.65
4.79
5.20
-
2.27
2.22
2.18
2.24
2.22
2.21
1.43
1.41
1.36
1.38
1.39
1.40
Bromoform
6.85
-
7.75
7.42
insol
n-Butanol
3.67 (t, 6)
-
3.41
3.54
3.60
0.94 (t, 7)
0.89
0.93
0.89
4.56 (s)
t-Butanol
1.28
1.18
1.11 (s)
1.05 (s)
1.16 (s)
1.40
1.24
4.19 (br s)
1.55 (br s)
2.18 (br s)
t-Butyl methyl ether
1.19
1.13
1.11
1.07
1.14
1.15
3.22
3.13
3.08
3.04
3.13
3.20
Chloroacetic acid
4.14
-
4.28
-
4.25
Chloroform
7.26
8.02
8.32
6.15
7.58
7.90
insol
Cyclohexane
1.43
1.43
1.40
1.40
1.44
1.45
insol
1,2-Dibromoethane
3.63
-
3.84
3.72
3.79
Dichoroacetic acid
5.98
-
6.68
-
6.21
1,2-Dichloroethane
3.73
3.87
3.90
2.90
3.81
3.78
3.92
Dichloromethane
5.30
5.63
5.76
4.27
5.44
5.49
insol
Diethyl ether
3.48 (q, 7)
3.41
3.38
3.26
3.42
3.49
3.56
1.20 (t, 7)
1.11
1.09
1.11
1.12
1.18
1.17
Diglyme
3.65 (m)
3.56
3.51
3.46
3.53
3.61
3.67
3.57 (m)
3.47
3.38
3.34
3.45
3.58
3.61
Diisopropyl ether
1.12 (d, 6)
-
1.04
-
1.12
Dimethoxyethane
3.40 (s)
3.28
3.24
3.12
3.28
3.35
3.37
3.55 (s)
3.46
3.43
3.33
3.45
3.52
3.60
Dimethylacetamide
3.02
3.00
2.94
2.57
2.96
3.31
3.06
2.94
2.83
2.78
2.05
2.83
2.92
2.90
(DMA)
2.08
1,97
1.96
1.60
1.97
2.07
2.08
DMF
8.02
2.94
7.95
7.63
7.92
7.97
7.92
2.96
2.78
2.89
2.36
2.89
2.99
3.01
2.88
7.96
2.73
1.86
2.77
2.86
2.85
DMSO
2.62
2.52
2.54
1.68
2.50
2.65
2.71
Dioxan
3.71
3.59
3.57
3.35
3.60
3.66
3.75
Ethylene glycol
3.76
3.28
3.34
3.41
3.51
3.59
3.65
EtOH
3.72 (q, 7)
3.57
3.44
3.34
3.54
3.60
3.65
1.25 (t, 7)
1.12
1.06
0.96
1.12
1.19
1.17
1.32 (br)
3.39
4.63
2.47
Ethyl acetate
4.12 (q, 7)
4.05
4.03
3.89
4.06
4.09
4.14
2.04 (s)
1.97
1.99
1.65
1.97
2.01
2.07
1.26 (t, 7)
1.20
1.17
0.92
1.20
1.24
1.24
Ethyl formate
8.04
-
8.23
-
8.16
4.22 (q, 7)
4.17
-
4.28
1.29 (t, 7)
1.24
-
1.29
Ethyl methyl ketone
2.14 (s)
2.07
2.07
1.58
2.06
2.12
2.19
2.46 (q)
2.45
2.43
1.81
2.43
2.50
3.18
1.06 (t)
0.96
0.91
0.85
0.96
1.01
1.26
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