Sorry to be pedantic but you're 95% correct Rackye.
I believe it's actually 2-ethyl-2-
hydroxymethyl-butanoic acid not 2-ethyl-2-methyl
hydroxy-butanoic acid, otherwise I agree with your naming. A "methylhydroxy" group from my understanding would imply a methoxyl with a hydroxy replacing the oxygen. The naming goes from outside in, such methoxy (H
3C-O-R), ethoxy (H
3C-CH
2-O-R), and so forth. They're stating alkyl group is on the oxygen, so hydroxymethyl states the hydroxy is on a methyl.
PubChem states the IUPAC name as "2-ethyl-2-(hydroxymethyl)butanoic acid".
Edit:
But next time if you don't want to waste time writing H everywhere, use bond line structure!!!!
It wont confuse people as in bond line structure unnamed bonds means CH3 group!!!!
I don't think he fully grasps molecular representation, see
this post. JSmith you should read more about
implied C-H atoms.