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 Synthesis, characterization and photochromic properties of novel spirooxazines, published in 2013-05-31, which mentions a compound: 530-66-5, mainly applied to spiro indoline naphthoxazine preparation photochromism merocyanine, SDS of cas: 530-66-5.
A series of spirooxazine compounds were synthesized via condensation reaction of 1,3,3-trimethyl-2-methyleneindoline with 1-nitroso-2,7-naphthalenediols, followed by esterification with acyl chlorides. Absorption bands in the visible region were observed in UV spectra (λmax: 530-665 nm), which were red-shifted as the polarity of solvent increased. Furthermore, these absorption bands also red-shifted with the increase of the electron-donating ability of the 6′-heterocycle substituent, but were nearly unaffected by 9′-acyloxy. Thermal decoloration showed that the thermal relaxation progress of the photomerocyanine followed 1st order kinetics and the relaxation time was tuned in a broad range from 125-1886 s (at 20°) by changing electron-donating power on 6′-heterocycle and 9′-acyloxy.
There is still a lot of research devoted to this compound(SMILES：[O-]S(=O)(O)=O.C12=CC=C[NH+]=C1C=CC=C2)SDS of cas: 530-66-5, and with the development of science, more effects of this compound(530-66-5) can be discovered.
Reference:
Thiazolidine – Wikipedia,
Thiazolidine – ScienceDirect.com