NMR impurities in Methanol-d₄ (CD₃OD)
Chemical shifts of common laboratory solvents, organics and gases measured in CD₃OD (deuterated methanol). Use it to identify the peaks in your spectrum that are not your compound.
- Residual solvent, ¹H
- 3.31 ppm
- Residual solvent, ¹³C
- 49.00 ppm
- Water, ¹H
- 4.87 ppm
To search these by shift instead of reading the table, open the lookup tool for CD₃OD or view them on a ppm axis.
¹H shifts in Methanol-d₄
68 signals, ordered by chemical shift.
| Impurity | Group | δ (ppm) | Mult. |
|---|---|---|---|
| pyridine | CH(2,6) | 8.53 | m |
| dimethylformamide | CH | 7.97 | s |
| chloroform | CH | 7.90 | s |
| pyridine | CH(4) | 7.85 | m |
| imidazole | CH(2) | 7.67 | s |
| pyridine | CH(3,5) | 7.44 | m |
| benzene | CH | 7.33 | s |
| toluene | CH(2,4,6) | 7.16 | m |
| toluene | CH(3,5) | 7.16 | m |
| imidazole | CH(4,5) | 7.05 | s |
| pyrrole | CH(2,5) | 6.72 | m |
| pyrrole | CH(3,4) | 6.08 | m |
| propylene | CH | 5.82 | m |
| dichloromethane | CH₂ | 5.49 | s |
| ethylene | CH₂ | 5.39 | s |
| propylene | CH₂(2) | 5.01 | dm, 17 |
| propylene | CH₂(1) | 4.91 | dm, 10 |
| water | OH | 4.87 | s |
| hydrogen | H₂ | 4.56 | s |
| nitromethane | CH₃ | 4.34 | s |
| ethyl acetate | CH₂CH₃ | 4.09 | q, 7 |
| 2-propanol | CH | 3.92 | sept, 6 |
| 1,2-dichloroethane | CH₂ | 3.78 | s |
| tetrahydrofuran | CH₂(2,5) | 3.71 | m |
| 1,4-dioxane | CH₂ | 3.66 | s |
| 18-crown-6 | CH₂ | 3.64 | s |
| diglyme | CH₂ | 3.61 | m |
| ethanol | CH₂ | 3.60 | q, 7 |
| ethylene glycol | CH₂ | 3.59 | s |
| diglyme | CH₂ | 3.58 | m |
| DME | CH₂ | 3.52 | s |
| diethyl ether | CH₂ | 3.49 | q, 7 |
| diglyme | OCH₃ | 3.35 | s |
| DME | CH₃ | 3.35 | s |
| solvent residual signalssolvent | — | 3.31 | — |
| dimethylformamide | CH₃ | 2.99 | s |
| dimethylformamide | CH₃ | 2.86 | s |
| pyrrolidine | CH₂(2,5) | 2.80 | m |
| HMPA | CH₃ | 2.64 | d, 9.5 |
| triethylamine | CH₂ | 2.58 | q, 7 |
| toluene | CH₃ | 2.32 | s |
| hexamethylbenzene | CH₃ | 2.19 | s |
| acetone | CH₃ | 2.15 | s |
| acetonitrile | CH₃ | 2.03 | s |
| ethyl acetate | CH₃CO | 2.01 | s |
| acetic acid | CH₃ | 1.99 | s |
| tetrahydrofuran | CH₂(3,4) | 1.87 | m |
| pyrrolidine | CH₂(3,4) | 1.72 | m |
| propylene | CH₃ | 1.70 | dt, 6.4, 1.5 |
| 2-propanol | CH₃ | 1.50 | d, 6 |
| cyclohexane | CH₂ | 1.45 | s |
| tert-butyl alcohol | CH₃ | 1.40 | s |
| propane | CH₂ | 1.34 | sept, 7.3 |
| H grease | CH₂ | 1.29 | br s |
| n-hexane | CH₂ | 1.29 | m |
| n-pentane | CH₂ | 1.29 | m |
| ethyl acetate | CH₂CH₃ | 1.24 | t, 7 |
| ethanol | CH₃ | 1.19 | t, 7 |
| diethyl ether | CH₃ | 1.18 | t, 7 |
| triethylamine | CH₃ | 1.05 | t, 7 |
| propane | CH₃ | 0.91 | t, 7.3 |
| n-hexane | CH₃ | 0.90 | t, 7 |
| n-pentane | CH₃ | 0.90 | t, 7 |
| H grease | CH₃ | 0.86–0.93 | m |
| ethane | CH₃ | 0.85 | s |
| methane | CH₄ | 0.20 | s |
| silicone grease | CH₃ | 0.10 | s |
| HMDSO | CH₃ | 0.07 | s |
¹³C{¹H} shifts in Methanol-d₄
76 signals, ordered by chemical shift.
| Impurity | Group | δ (ppm) |
|---|---|---|
| acetone | CO | 209.67 |
| carbon disulfide | CS₂ | 193.82 |
| acetic acid | CO | 175.11 |
| ethyl acetate | CO | 172.89 |
| dimethylformamide | CH | 164.73 |
| pyridine | CH(2,6) | 150.07 |
| toluene | C(1) | 138.85 |
| pyridine | CH(4) | 138.35 |
| imidazole | CH(2) | 136.31 |
| propylene | CH | 134.61 |
| hexamethylbenzene | C | 132.53 |
| toluene | CH(2,6) | 129.91 |
| benzene | CH | 129.34 |
| toluene | CH(3,5) | 129.20 |
| carbon dioxide | CO₂ | 126.31 |
| toluene | CH(4) | 126.29 |
| pyridine | CH(3,5) | 125.53 |
| ethylene | CH₂ | 123.46 |
| imidazole | CH(4,5) | 122.60 |
| pyrrole | CH(2,5) | 118.28 |
| acetonitrile | CN | 118.06 |
| propylene | CH₂ | 116.04 |
| pyrrole | CH(3,4) | 108.11 |
| carbon tetrachloride | CCl₄ | 97.21 |
| chloroform | CH | 79.44 |
| diglyme | CH₂ | 72.92 |
| DME | CH₂ | 72.72 |
| 18-crown-6 | CH₂ | 71.47 |
| diglyme | CH₂ | 71.33 |
| tert-butyl alcohol | (CH₃)₃C | 69.40 |
| tetrahydrofuran | CH₂(2,5) | 68.83 |
| 1,4-dioxane | CH₂ | 68.11 |
| diethyl ether | CH₂ | 66.88 |
| 2-propanol | CH | 64.71 |
| ethylene glycol | CH₂ | 64.30 |
| nitromethane | CH₃ | 63.08 |
| ethyl acetate | CH₂ | 61.50 |
| diglyme | CH₃ | 59.06 |
| DME | CH₃ | 59.06 |
| ethanol | CH₂ | 58.26 |
| dichloromethane | CH₂ | 54.78 |
| solvent residual signalssolvent | — | 49.00 |
| pyrrolidine | CH₂(2,5) | 47.23 |
| triethylamine | CH₂ | 46.96 |
| 1,2-dichloroethane | CH₂ | 45.11 |
| HMPA | CH₃ | 37.00 |
| dimethylformamide | CH₃ | 36.89 |
| n-pentane | CH₂(3) | 35.30 |
| n-hexane | CH₂(3,4) | 32.73 |
| dimethylformamide | CH₃ | 31.61 |
| tert-butyl alcohol | (CH₃)₃C | 30.91 |
| acetone | CH₃ | 30.67 |
| cyclohexane | CH₂ | 27.96 |
| tetrahydrofuran | CH₂(3,4) | 26.48 |
| pyrrolidine | CH₂(3,4) | 26.29 |
| 2-propanol | CH₃ | 25.27 |
| n-hexane | CH₂(2,5) | 23.68 |
| n-pentane | CH₂(2,4) | 23.38 |
| toluene | CH₃ | 21.50 |
| ethyl acetate | CH₃CO | 20.88 |
| acetic acid | CH₃ | 20.56 |
| propylene | CH₃ | 19.50 |
| ethanol | CH₃ | 18.40 |
| propane | CH₂ | 17.19 |
| hexamethylbenzene | CH₃ | 16.90 |
| propane | CH₃ | 16.80 |
| diethyl ether | CH₃ | 15.46 |
| ethyl acetate | CH₃ | 14.49 |
| n-hexane | CH₃ | 14.45 |
| n-pentane | CH₃ | 14.39 |
| triethylamine | CH₃ | 11.09 |
| ethane | CH₃ | 6.98 |
| silicone grease | CH₃ | 2.10 |
| HMDSO | CH₃ | 1.99 |
| acetonitrile | CH₃ | 0.85 |
| methane | CH₄ | −4.90 |
Other solvents
Data reproduced from Fulmer et al., Organometallics 2010, 29, 2176-2179. See about for how to read these values.