The molecular formula may refer to:
- Alcohols
- Allyl alcohol or 2-propen-1-ol, CH<sub>2</sub>=CH-CH<sub>2</sub>OH, CAS number
- cyclopropanol or cyclopropyl alcohol, cyclo (-CH<sub>2</sub>-CH<sub>2</sub>-HOHC-), CAS number
- Aldehydes
- propanal or propionaldehyde, CH<sub>3</sub>CH<sub>2</sub>-CHO, CAS number
- Ketones
- Propanone or acetone, CH<sub>3</sub>-CO-CH<sub>3</sub>, CAS number
- Enols (tautomers of aldehydes and ketones)
- (E)-1-propen-1-ol, CH<sub>3</sub>-CH=CH-OH, CAS number
- (Z)-1-propen-1-ol, CH<sub>3</sub>-CH=CH-OH, CAS number
- propen-2-ol, CH<sub>2</sub>=C(OH)-CH<sub>3</sub>, CAS number or
- Ethers
- methyl vinyl ether or methoxyethene, H<sub>3</sub>C-O-CH=CH<sub>2</sub>, CAS number:
- oxetane or trimethylene oxide, cyclo(-CH<sub>2</sub>-CH<sub>2</sub>-O-CH<sub>2</sub>-), CAS number:
- 1,2-epoxy-propane or Propylene oxide or methyl oxirane, cyclo(-C*H(CH<sub>3</sub>)-CH<sub>2</sub>-O-), C* chiral, CAS number:
- (R)-(+)-methyl oxirane, CAS number
- (S)-(âÂÂ)-methyl oxirane, CAS number