9902.06.38 - {(4S)-8-Fluoro-2-[4-(3-methoxyphenyl)-1-pipera- zinyl]-3-[2-methoxy-5-(trifluoromethyl)phenyl]- 3,4-dihydro-4-quinazolinyl}acetic acid (CAS No. 917389-32-3) (provided for in subheading 2933.59.36)

This HTS classification, specifically 9902.06.38, pertains to a very narrowly defined pharmaceutical compound: {(4S)-8-Fluoro-2-[4-(3-methoxyphenyl)-1-piperazinyl]-3-[2-methoxy-5-(trifluoromethyl)phenyl]-3,4-dihydro-4-quinazolinyl}acetic acid, identified by CAS No. 917389-32-3. This entry is part of Chapter 99, which covers temporary legislation and special provisions, indicating that this specific compound is subject to temporary import restrictions or modifications. The parenthetical reference to subheading 2933.59.36 signifies its underlying classification within the standard HTS structure for heterocyclic compounds.

Distinguishing this specific entry from its sibling categories within Chapter 99 is straightforward: Chapter 99 is a broad category encompassing a multitude of temporary tariff modifications and restrictions across various goods. This particular subheading, 9902.06.38, is exceptionally specific, unlike the more general provisions that might exist for other temporary trade measures or seasonal duties. It focuses solely on this single, complex chemical entity, highlighting its unique regulatory treatment.

As this classification (9902.06.38) is a leaf node, there are no further subcategories. The entire scope of this entry is captured by the chemical name and CAS number provided. Classification within this subheading is determined by the precise chemical identity of the imported article. Any deviation in chemical structure, stereochemistry, or purity that alters it from the defined compound would necessitate reclassification.