Aldehyde C-12 MNA, also known as 2-methyl undecanal or methyl nonyl acetaldehyde, is a synthetic aldehyde used in perfumery. It is a colorless to pale yellow liquid with a fresh, aldehydic, and citrusy odor. 
 
Key Characteristics and Uses:
Odor Profile:
Described as fresh, aldehydic, citrusy, and sometimes with a hint of amber or moss. It can also have nuances of floral, herbaceous, or metallic notes.