Assertion: epinephrine's methyl group | /r/HasProperty | replaced by a hydrogen atom
Facets:
value: in norepinephrine
type: OTHER
Source sentences:
text: Its structure differs from that of epinephrine only in that epinephrine has a methyl group attached to its nitrogen, whereas the methyl group is replaced by a hydrogen atom in norepinephrine.
text: Structurally, norepinephrine is quite similar to epinephrine, another catecholamine, except that a methyl group in epinephrine is replaced by a hydrogen atom in norepinephrine.