Cerniani, A. et al. published their research in Journal of the Chemical Society in 1954 | CAS: 1843-21-6

N-Phenylbenzo[d]thiazol-2-amine (cas: 1843-21-6) belongs to thiazole derivatives. The higher aromaticity of thiazole is due to delocalization of a lone pair of sulfur electrons across the ring, which is evidenced by chemical shifts of ring hydrogen at δ 7.27 and 8.77 ppm (C2 and C4), indicating diamagnetic ring current. There are numerous natural products that possess a thiazole ring with broad pharmacological activities. Thiamine, also known as vitamin B1, possesses a thiazole ring linked with 2-methylpyrimidine-4-amine as hydrochloride salt.Recommanded Product: N-Phenylbenzo[d]thiazol-2-amine

The near-ultraviolet absorption spectra of some heterocyclic compounds. II. Benzothiazoles was written by Cerniani, A.;Passerini, R.. And the article was included in Journal of the Chemical Society in 1954.Recommanded Product: N-Phenylbenzo[d]thiazol-2-amine This article mentions the following:

The UV spectra of benzothiazole and a series of derivatives similar to benzoxazole derivatives obtained previously (loc. cit.) have been measured. The absorption maximum of 35 compounds are given and discussed briefly. The benzothiazoles show bathochromic shifts of bands without intensification. The following compounds were prepared by refluxing ethanolic solutions of 2-chloro- or 6-nitro-2-chlorobenzothiazole and the appropriate K mercaptide or aniline derivative: 2-(ο-tolylthio)benzothiazole, b17 237°; 2-(m-tolylthio)benzothiazole, b17 245°; 2-(ο-toluidino)benzothiazole, m. 127°; 2-(m-toluidino)benzothiazole, m. 124°; 3-(m-nitroanilino)benzothiazole, m. 190°; 6-nitro-2-(phenylthio)benzothiazole, m. 104°; 6-nitro-2-(ο-tolylthio)benzothiazole, m. 102°; 6-nitro-2-(m-tolylthio)benzothiazole, m. 134°; 6-nitro-2-(p-tolylthio)benzothiazole, m. 146°; 6-nitro-2-(m-toluidino)benzothiazole, m. 222°. Heating 2-chloro-6-nitrobenzothiazole and m-nitroaniline yielded 6-nitro-2-(m-nitrophenyl)bensothiazole, yellow needles from AcOH, m. 257°. In the experiment, the researchers used many compounds, for example, N-Phenylbenzo[d]thiazol-2-amine (cas: 1843-21-6Recommanded Product: N-Phenylbenzo[d]thiazol-2-amine).

N-Phenylbenzo[d]thiazol-2-amine (cas: 1843-21-6) belongs to thiazole derivatives. The higher aromaticity of thiazole is due to delocalization of a lone pair of sulfur electrons across the ring, which is evidenced by chemical shifts of ring hydrogen at δ 7.27 and 8.77 ppm (C2 and C4), indicating diamagnetic ring current. There are numerous natural products that possess a thiazole ring with broad pharmacological activities. Thiamine, also known as vitamin B1, possesses a thiazole ring linked with 2-methylpyrimidine-4-amine as hydrochloride salt.Recommanded Product: N-Phenylbenzo[d]thiazol-2-amine

Referemce:
Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica