Possible Questions:
- Chemical compound
- Chemical relative
- Compound with multiple forms
- Compound similar to another
- Chemical cousin
- Glucose, to fructose
- Beta carotene, for one
- Chemical "twin"
- Related compound
- One of chemically related compounds
- Fraternal twin, in chemistry
- Ethanol, in relation to dimethyl ether
- Cousin of a compound
- Compound resembling another
- Compound related to another
- Chemistry test topic
- Chemistry exam topic, perhaps
- Certain nuclide
- Variant compound
- Similar compound
- Same compound with a different arrangement of atoms
- Radioactive nucleus
- Phenanthrene, to anthracene
- Pentane, e.g.
- Nuclear compound
- Neopentane, to pentane
- Fulminic acid, to cyanic acid
- Ethanol, to dimethyl ether
- Diethyl ether, to butanol
- Compound's close relative
- Compound variation
- Compound variant
- Compound related to another compound
- Chemically related compound
- Chemical compound resembling another one
- Chemical "anagram"
- Butylene e.g.
- Beta-carotene, e.g.
- Alanine or dioxin