9902.02.25 - Leucoquinizarin as 1,4,9,10-tetrahydroxyanthracene (CAS No. 476-60-8), 2,3-dihydro-9,10-dihydroxyanthracene-1,4-dione (CAS No. 17648-03-2) or 2,3-dihydro-1,4-dihydroxy-9,10-anthracenedione (CAS No. 40498-13-3) (provided for in subheading 2907.29.90 or 2914.69.90)

This HTS classification, 9902.02.25, pertains to specific chemical compounds identified as Leucoquinizarin, which are recognized by their CAS numbers: 476-60-8 (1,4,9,10-tetrahydroxyanthracene), 17648-03-2 (2,3-dihydro-9,10-dihydroxyanthracene-1,4-dione), and 40498-13-3 (2,3-dihydro-1,4-dihydroxy-9,10-anthracenedione). These substances are subject to special classification provisions and temporary legislation under Chapter 99 of the Harmonized Tariff Schedule, often due to trade agreements or specific import restrictions.

As a leaf node within Chapter 99, this entry does not have further subdivisions. Its specificity lies in identifying these particular Leucoquinizarin derivatives. The parenthetical references to subheadings 2907.29.90 and 2914.69.90 indicate that the underlying chemical nature of these compounds falls within broader categories of phenolic compounds or cyclic ketones, respectively, but this specific HTS 9902 code designates them for distinct tariff or regulatory treatment. Unlike the vast array of goods classified in other chapters (such as live animals in Chapter 01), this entry is narrowly focused on these particular chemical entities and their unique import status.