Acid reducing yeast Lalvin AC

I make a wine from a variety called Bacchus (Sauvingnon Blanc style) in England,and am looking for a supplier of a yeast called Lalvin AC,which is specifically recommended for Sauvingnon Blanc style wines.This yeast is supposed to be particularly good at reducing the acidity of cool season and region wines. I am aware that Lalvin 71B also reduces the acidity,but it is not particularly noted for dry white wines. So I would be very pleased if anyone knows of a supplier (small quantity) of the yeast Lalvin AC. Michael