Christopher John Fynn wrote: > Print e.g. oestrogen (where oe represents a single > sound), but, e.g., chloro-ethane (not chloroethane) to avoid > confusion.
Please don't try to apply these rules to chemical nomenclature - there are already enough people who get the hyphens wrong, without encouraging them. The 2 authorities, IUPAC and CAS, regard choroethane as correct. Alan Wood http://www.alanwood.net (Unicode, special characters, pesticide names)

