splitting variable product code(letters and numbers) in r : i have a product code  variable like 

Product Code
RMMI001,
RMMI001,
CMCM009,
ASCMOT064,
ASPMOA023,
CMCM009,
CMCM012,
CMCM001,
ASCMBW001,
RMMI001,
TMHO002,
TMSP001,
TMHO002,
TMDMST003
i need to split those and need that character in anaother column  