chemical science, chemistry - the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions
alter, change, modify - cause to change; make different; cause a transformation; "The advent of the automobile may have altered the growth pattern of the city"; "The discussion has changed my thinking about the issue"
chemical science, chemistry - the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions
change - undergo a change; become different in essence; losing one's or its original nature; "She changed completely as she grew older"; "The weather changed last night"
Their phenol could also isomerize to a ketone and a ring constriction could occur by elimination of carbon monoxide to give m/z 255.2142 [[M+H-[H.sub.2]O-CO].sup.+].
Considering Z-ligustilide and senkyunolide A readily isomerize to other chemical compounds at room temperature (Cui et al., 2006), it is critical to stabilize their structures long enough to be effective.
(20) Secondary alkoxides are known to isomerize into primary alkoxides, and it is well known that secondary alkoxides are more stable, but less reactive, than primary alkoxides.
Mannose-6-phosphate (M6P), a natural sugar, is known to isomerize to fructose-6-phosphate (F6P), an intermediate of glycolysis in the step prior to FBP.