?4-Bromo-2-Fluorobenzaldehyde ,?its cas register number is 57848-46-1. It also can be called?Benzaldehyde, 4-bromo-2-fluoro-?;?2-Fluoro-4-bromobenzaldehyde ;?4-Bromo-2-Fluorobenzaldehyde2-Fluoro-4-Bromobenzaldehyde?.