2924.29.57.00 - Diethylaminoacetoxylidide (Lidocaine)

This HTS code, 2924.29.57.00, specifically classifies Diethylaminoacetoxylidide, commonly known as Lidocaine. Lidocaine is a synthetic organic chemical compound that functions as a local anesthetic and antiarrhythmic drug. Its classification within this chapter highlights its nature as a complex organic chemical, distinct from simpler compounds.

Within the broader category of "Drugs" under cyclic amides and their derivatives, this specific sub-heading is for Lidocaine itself. It is differentiated from its sibling category, 2924.29.62 ("Other"), which would encompass other pharmaceutical preparations or active ingredients within this amide family that are not Lidocaine. The purpose and chemical structure are the primary distinguishing factors.

As this is a leaf node within the HTS, there are no further subcategories to explore. The classification ends here, directly identifying Lidocaine for import and export purposes. This level of detail ensures that the specific pharmaceutical agent is accurately identified for customs and regulatory compliance.