4-Chlorobenzaldehyde-2,3,5,6-d4

4-Chlorobenzaldehyde-2,3,5,6-d4 is a deuterated research standard used primarily in analytical chemistry and laboratory research. Its structure features a benzene ring with a chlorine substituent and an aldehyde group, with all four aromatic hydrogen atoms replaced by deuterium, making it suitable for isotope-labeled studies.