The submitter has added the synonyms 'poly-alpha-olefin' and 'poly-α-olefin', however it seems to think that these are indentical. As a result I get error messages ('The data item added is not unique'.) whenever I try to make any alterations to this card. Is there any way aroud this?
I've managed to get round it by deleting one of them and making the necessary alterations to the card. However it does seem strange that it can't distinguish between alpha and <greek>alpha</greek>