| Answer | Crossword Clue |
|---|---|
| quaternary | (of a carbon atom) Bonded to four other carbon atoms |
| secondary | (of an organic compound) Having its functional group located on a carbon atom that is bonded to two other carbon atoms |
| primary | (of an organic compound) Having its functional group located on a carbon atom that is bonded to no more than one other carbon atom |
| thiazine | any of a class of compounds containing a ring composed of one atom each of sulfur and nitrogen and four atoms of carbon |
| pyrrolic | a toxic liquid heterocyclic compound C4H5N that has a ring consisting of four carbon atoms and one nitrogen atom, polymerizes readily in air, and is the parent compound of many biologically important substances (as bile pigments, porphyrins, and chlorophyll) |
