| Freq(below 9GHz) | name | formula | Strength | Notes |
| 327.384339 | deuterium | (2)H | 4.65e-17 |
| 701.677 | CH radical | CH |
| 724.788 | CH radical | CH |
| 834.301 | methanol | CH3OH | 4.0e-12 | Lang gives 834.267 |
| 1046.488 | thioformaldehyde | H2CS | 1.8e-11 |
| 1065.075 | acetaldehyde | CH3CHO | 4.5e-11 |
| 1371.709 | vinyl cyanide | CH2CHCN | |
| 1371.794 | vinyl cyanide | CH2CHCN | 6.8e-11 |
| 1371.947 | vinyl cyanide | CH2CHCN | |
| 1404.30 | ionized molecular hydrogen | H2+ | 2.75e-15 |
| 1412.24 | ionized molecular hydrogen | H2+ | 2.80e-15 |
| 1420.405751 | neutral hydrogen | HI | 2.87e-15 |
| 1538.135 | formamide | NH2CHO |
| 1538.693 | formamide | NH2CHO |
| 1539.295 | formamide | NH2CHO |
| 1539.543 | formamide | NH2CHO |
| 1539.570 | formamide | NH2CHO |
| 1539.851 | formamide | NH2CHO |
| 1541.018 | formamide | NH2CHO |
| 1570.825 | formamide? with C13 | NH2(13)CHO |
| 1610.249 | methyl formate | HCOOCH3 | 6.5e-11 |
| 1610.906 | methyl formate | HCOOCH3 | 6.5e-11 |
| 1612.231 | hydroxyl | OH | 1.3e-11 | masers |
| 1624.518 | hydroxyl with O17 | (17)OH |
| 1626.161 | hydroxyl with O17 | (17)OH |
| 1637.564 | hydroxyl with O18 | (18)OH | 7.0e-11 |
| 1638.805 | formic acid | HCOOH | 5.0e-11 |
| 1639.460 | hydroxyl with O18 | (18)OH | 7.5e-11 |
| 1665.4018 | hydroxyl | OH | 7.1e-11 | masers |
| 1667.3590 | hydroxyl | OH | 7.7e-11 | masers |
| 1720.527 | hydroxyl | OH | 9.4e-12 | can maser |
| 1771.61 | neutral sodium | Na | 5.6e-15 |
| 1853.399 | | CH3CHO | |
| 2660 | cyanodiacetyline | HC5N | | Pedlar list |
| 3139.380 | thioformaldehyde | CH2S | 1.6e-10 |
| 3195.167 | acetaldehyde | CH3CHO | 4.1e-10 |
| 3263.974 | CH radical | CH | | Lang gives 3263.788 |
| 3335.481 | CH radical | CH | | Lang gives 3334.475 |
| 3349.193 | CH radical | CH | | |
| 3527.106 | | CH3CHO |
| 4388.797 | | CH2(18)O | 2.7e-9 |
| 4593.089 | formaldehyde with C13 | H2(13)CO | | |
| 4617.118 | formamide | NH2HCO | |
| 4618.970 | formamide | NH2HCO | |
| 4619.988 | formamide | NH2HCO | |
| 4660.242 | hydroxyl | OH | 1.1e-9 |
| 4750.656 | hydroxyl | OH | 7.6e-10 |
| 4765.562 | hydroxyl | OH | 3.6e-10 |
| 4829.6596 | formaldehyde | CH2O | 3.6e-9 |
| 4916.312 | formic acid | HCOOH | 1.2e-10 |
| 5005.3208 | methanol | CHOOH | | |
| 5225.421 | | HC5N | | |
| 5288.980 | methanimine | CH2NH | 1.5e-9 |
| 5289.786 | methanimine | CH2NH | |
| 5290.726 | methanimine | CH2NH | |
| 5291.646 | methanimine | CH2NH | |
| 5324.058 | | HC5N | | |
| 5324.270 | | HC5N | | |
| 5325.330 | | HC5N | | |
| 5325.330 | | HC5N | | |
| 5327.451 | | HC5N | | |
| 6016.746 | hydroxyl | OH | |
| 6030.747 | hydroxyl | OH | | maser |
| 6035.092 | hydroxyl | OH | | maser |
| 6049.084 | hydroxyl | OH | |
| 6181.762 | | HC6N | | McCarthy et al ApJ 513 305 (1999) |
| 6181.980 | | HC6N | | McCarthy et al ApJ 513 305 (1999) |
| 6182.030 | | HC6N | | McCarthy et al ApJ 513 305 (1999) |
| 6278.650 | thioformaldehyde | H2CS | 6.5e-10 |
| 6389.492 | | CH3CHO | |
| 6546.464 | | CH3CHO | |
| 6668.5192 | methanol | CH3OH | | masers |
| 6695.838 | | HC4N | | McCarthy et al ApJ 513 305 (1999) |
| 6697.189 | | HC4N | | McCarthy et al ApJ 513 305 (1999) |
| 6834.682614 | Rubidium | Rb | | not seen yet |
| 7894.563 | | HC7N | | Rodriguez and Chaisson MNRAS 192 651 (1980) |
| 7895.983 | | HC7N | | Rodriguez and Chaisson MNRAS 192 651 (1980) |
| 7896.005 | | HC7N | | Rodriguez and Chaisson MNRAS 192 651 (1980) |
| 7896.017 | | HC7N | | Rodriguez and Chaisson MNRAS 192 651 (1980) |
| 7896.227 | | HC7N | | Rodriguez and Chaisson MNRAS 192 651 (1980) |
| 7897.669 | | HC7N | | Rodriguez and Chaisson MNRAS 192 651 (1980) |
| 7986.631 | | HC5N | | Rodriguez and Chaisson MNRAS 192 651 (1980) |
| 7987.782 | | HC5N | | Rodriguez and Chaisson MNRAS 192 651 (1980) |
| 7987.994 | | HC5N | | Rodriguez and Chaisson MNRAS 192 651 (1980) |
| 7988.044 | | HC5N | | Rodriguez and Chaisson MNRAS 192 651 (1980) |
| 7988.539 | | HC5N | | Rodriguez and Chaisson MNRAS 192 651 (1980) |
| 7989.902 | | HC5N | | Rodriguez and Chaisson MNRAS 192 651 (1980) |
| 8135.868 | hydroxyl | OH | |
| 8242.440 | | HC6N | | McCarthy et al ApJ 513 305 (1999) |
| 8242.534 | | HC6N | | McCarthy et al ApJ 513 305 (1999) |
| 8242.567 | | HC6N | | McCarthy et al ApJ 513 305 (1999) |
| 8304.960 | | HC6N | | McCarthy et al ApJ 513 305 (1999) |
| 8665.650 | ionized 3He | He+ | 1.95e-12 | in HII regions |
| 8780. | methlylamine | CH3NH2 | | Pedlar list |