9902.08.39 - Vat blue 1 (synthetic indigo) (2-(1,3-dihydro-3-oxo-2H-indazol-2-ylidene)-1,2-dihydro-3H-indol-3-one) (CAS No. 482-89-3) (provided for in subheading 3204.15.10)

This HTS category, 9902.08.39, specifically covers Vat blue 1, also known as synthetic indigo. Its chemical name is 2-(1,3-dihydro-3-oxo-2H-indazol-2-ylidene)-1,2-dihydro-3H-indol-3-one, with CAS Number 482-89-3. This classification is placed under Chapter 99, which pertains to temporary legislation and modifications. The "provided for in subheading 3204.15.10" notation indicates its primary classification under synthetic dyestuffs within the broader chemical headings.

Given that this is a leaf node, there are no subcategories to detail. Instead, it's crucial to understand that this specific provision in Chapter 99 likely relates to temporary import restrictions or tariff treatments for synthetic indigo, distinct from its permanent classification under Chapter 32. While siblings at the HTS Database Root level represent a vast array of unrelated goods, the true distinction for this entry lies in its temporary and specific nature, setting it apart from any permanent classifications within Chapter 32 that might also cover dyestuffs. This provision is for specialized import management under specific legal authorities, not for general trade of dyestuffs.