Solve this sudoku-style puzzle and unscramble the 18th century chemist 

Solve this wordoku in the same way as a sudoku with letters instead of numbers (each of the nine letters in each row, column and nine-square cell). Once solved, one of the overall diagonals can be rearranged into the name of an 18th century chemist.

This week’s letters are: A E I L M O R S V