The raspberry-flavoured food additive, butyl methanoate, can be prepared from CH₃CH₂CH₂CH₂OH using A - VCE - SSCE Chemistry - Question 8 - 2006 - Paper 1

Butyl methanoate can be synthesized through a condensation reaction between butanol (CH₃CH₂CH₂CH₂OH) and formic acid (HCOOH). In this reaction, water is eliminated as a byproduct, allowing the formation of the ester. The reaction can be represented as follows:

$ext{CH₃CH₂CH₂CH₂OH} + ext{HCOOH} \rightarrow ext{Butyl Methanoate} + ext{H₂O}$

This process leads to the formation of the desired food additive.