In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called 5,6-(6,7-)dichlorobenzothiazolylazo dyes for synthetic polymer fibers, published in 1992, which mentions a compound: 25150-27-0, mainly applied to chlorobenzothiazole azo dye polyester, Formula: C7H4Cl2N2S.
The synthesis and properties of a series of monoazo dyes derived from an isomer mixture of 5,6-dichloro- and 6,7-dichloro-2-aminobenzothiazoles as the diazo component are reported. By appropriate selection of substituents in the coupling component, dyes varying in hue from orange-red to deep violet can be obtained. Coloration and light-fastness evaluations of the dyes on polyester fiber indicate that they can be viable alternatives to anthraquinone-based dyes of similar hue.
Here is just a brief introduction to this compound(25150-27-0)Formula: C7H4Cl2N2S, more information about the compound(6,7-Dichlorobenzo[d]thiazol-2-amine) is in the article, you can click the link below.
Reference:
1,3-Benzodioxole – Wikipedia,
Dioxole | C3H4O2 – PubChem