| Compound that Merck started making in '43 | 45 |
| Compound that's a bum steer? | 32 |
| Compound that's a homophone for a Purim heroine | 51 |
| Compound that's an anagram of "steer" | 51 |
| Compound that's subject to tautomerism | 42 |
| Compound used as a detonator | 28 |
| Compound used as a disinfectant | 31 |
| Compound used as a flavoring agent | 34 |
| Compound used as a fuel gas | 27 |
| Compound used as a lab solvent | 30 |
| Compound used as a photographic developer | 41 |
| Compound used as a water softener | 33 |
| Compound used as antiseptic | 27 |
| Compound used as fertilizer | 27 |
| Compound used by welders | 24 |
| Compound used for crowd control | 31 |
| Compound used in abrasives | 26 |
| Compound used in air conditioners | 33 |
| Compound used in aviation fuel | 30 |
| Compound used in dyes | 21 |
| Compound used in explosives | 27 |
| Compound used in fertilizers | 28 |
| Compound used in leathermaking | 30 |
| Compound used in making dyes | 28 |
| Compound used in making plastics | 32 |
| Compound used in perfume manufacture | 36 |
| Compound used in perfumes | 25 |
| Compound used in photographic film production | 45 |
| Compound used in plastic manufacturing | 38 |
| Compound used in plastics | 25 |
| Compound used in solvents | 25 |
| Compound used in street lights | 30 |
| Compound used in synthetic rubber | 33 |
| Compound used in wartime | 24 |
| Compound used in wood preservatives | 35 |
| Compound used to kill ants | 26 |
| Compound used to stabilize perfume | 34 |
| Compound used to stabilize perfumes | 35 |
| Compound used to treat chiggers and scabies | 43 |
| Compound variant | 16 |
| Compound variants | 17 |
| Compound variation | 18 |
| Compound W target | 17 |
| Compound W's target | 23 |
| Compound wagers | 15 |
| Compound whence caffeine is derived | 35 |
| Compound with a double bond | 27 |
| Compound with a double-bonded carbon atom | 41 |
| Compound with a doubly linked carbon atom | 41 |
| Compound with a doubly-linked carbon atom | 41 |
| Compound with a halogen atom | 28 |
| Compound with a high pH, in sci. class | 38 |
| Compound with a hydroxyl group | 30 |
| Compound with a low pH | 22 |
| Compound with double-bonded carbon atoms | 40 |
| Compound with five carbon atoms | 31 |
| Compound with multiple forms | 28 |
| Compound with two carbon atoms | 30 |
| Compound with two carbon double bonds | 37 |
| Compound with two double bonds | 30 |
| Compound within rust | 20 |
| Compound's close relative | 29 |
| Compound-word separation | 24 |
| Compounds | 9 |
| Compounds formed by polymerization | 34 |
| Compounds found in wine | 23 |
| Compounds in rust, etc. | 23 |
| Compounds in vinegar and car batteries | 38 |
| Compounds including vitamin D | 29 |
| Compounds relating with others | 30 |
| Compounds that contribute to beer's fruity flavor | 53 |
| Compounds that smell of rotting fish | 36 |
| Compounds used by nuclear physicists | 36 |
| Compounds used for bromides | 27 |
| Compounds with double-bond carbons | 34 |
| Compounds with nitrogen | 23 |
| Comprehend | 10 |
| Comprehend a joke | 17 |
| Comprehend, in a way | 20 |
| Comprehend, with "on" | 31 |
| Comprehended | 12 |
| Comprehended by? | 16 |
| Comprehending | 13 |
| Comprehending words | 19 |
| Comprehends | 11 |
| Comprehends written material | 28 |
| Comprehensible | 14 |
| Comprehension | 13 |
| Comprehensive | 13 |
| Comprehensive victory | 22 |
| Comprehensive alerts, briefly | 29 |
| Comprehensive book lists | 24 |
| Comprehensive command | 21 |
| Comprehensive go-ahead | 22 |
| Comprehensive inspection | 24 |
| Comprehensive insurance plans | 29 |
| Comprehensive picture | 21 |
| Comprehensive preparation? | 26 |
| Comprehensive protection system | 31 |
| Comprehensive spa treatment | 27 |