# IUPAC names accidentally differing in hyphen only

Here is an example of two compounds

$$\ce{CH3CH2COOCH3}$$ vs $$\ce{(CH3)2CHCOO-}$$

i.e.

vs

whose possible IUPAC names

methyl propanoate
vs
methylpropanoate

accidentally differ only in presence/absence of a space. (Note that complete, unambiguous name of the second compound is 2-methylpropanoate)

Is there an (accidental) example of two IUPAC names for different compounds, that differ only in presence/absence of a hyphen ("-") instead?

(Question might sound hypothetical, strange and inappropriate, but is related to to this one)

UPDATE: Mentioned ‘methylpropanoate’ preferred IUPAC name is 2-methylpropanoate. There's a better example pair:

• phenyl acetate ($\ce{CH3COOPh}$)
• phenylacetate ($\ce{PhCH2COO^{-}}$)

Note that in some language localized official IUPAC nomenclatures, the names really differ by the hyphen instead of the space (e.g. in Czech: fenyl-acetát vs fenylacetát), but I was wondering about the English nomenclature.