isomerism
Same atoms, different arrangements
Isomerism is a phenomenon in chemistry where compounds share the same molecular formula but differ in the arrangement of their atoms.
Two isomers contain identical numbers of the same elements yet behave as distinct substances with different properties.
Structural isomers arrange atoms in different sequences; stereoisomers have the same sequence but different spatial orientations.
The drug's effectiveness depends on which isomer is present.
Mirror-image non-superimposability
- enantiomersMirror-image molecular pairs
- stereoisomersSpatially distinct molecular forms
- asymmetricNot identical on both sides
- configurationArrangement of parts
Health-promoting walk
- positionalRelating to placement
- chainLinked segments forming length
- skeletalOf or like bones
- tautomerismInterconvertible structural isomer equilibrium
branching · connectivity · linkage · substitutional · rearrangement · organic chemistry · synthesis · alkanes
On this side
- transPrefix for across
- cis-transIsomer position descriptors
- double bondTwo shared electron pairs
- retinalOf eye's inner lining
Organic compounds forming proteins
- proteinsAmino acid polymers
- enzymesReaction-speeding proteins
- carbohydratesSugar-based energy compounds
- glucosePrimary cellular fuel
fructose · ribose · nucleotides · thalidomide · lipids · biomolecules
Formal decision or determination
- specific rotationStandardized optical activity measure
- chiral resolutionSeparating mirror-image isomers
- conglomerateCorporation spanning many industries
Concerning circular movement
- torsionRotational strain force
- gaucheSocially awkward, unrefined
- antiPrefix for opposition
- eclipsedSurpassed or obscured
staggered · chair · boat · axial · equatorial · energy barrier · cyclohexane
chirality
Mirror-image non-superimposability
- enantiomersMirror-image molecular pairs
- stereoisomersSpatially distinct molecular forms
- asymmetricNot identical on both sides
constitutional
Health-promoting walk
- positionalRelating to placement
- chainLinked segments forming length
- skeletalOf or like bones
tautomerism · branching · connectivity · linkage · substitutional · rearrangement · organic chemistry · synthesis · alkanes
cis
On this side
- transPrefix for across
- cis-transIsomer position descriptors
- double bondTwo shared electron pairs
amino acids
Organic compounds forming proteins
- proteinsAmino acid polymers
- enzymesReaction-speeding proteins
- carbohydratesSugar-based energy compounds
glucose · fructose · ribose · nucleotides · thalidomide · lipids · biomolecules
resolution
Formal decision or determination
- specific rotationStandardized optical activity measure
- chiral resolutionSeparating mirror-image isomers
- conglomerateCorporation spanning many industries
rotational
Concerning circular movement
eclipsed · staggered · chair · boat · axial · equatorial · energy barrier · cyclohexane
- cis-trans isomerismDiffering spatial atomic arrangements