Respuesta :
Answer: But-
In organic chemistry, the prefixes used are mostly derived from Greek (though But- is one exception and invented by IUPAC!). You can see the prefix but- in many four carbon organic molecules, such as butane, butene, and butanol.
In organic chemistry, the prefixes used are mostly derived from Greek (though But- is one exception and invented by IUPAC!). You can see the prefix but- in many four carbon organic molecules, such as butane, butene, and butanol.