Thiazine

1,4-Thiazine
Names
	Preferred IUPAC name 4H-1,4-Thiazine
	Other names Parathiazine
Identifiers
CAS Number	290-57-3; 1,2: 11084-06-3; 1,3: 27813-20-3;
3D model (JSmol)	1,2: Interactive image; 1,3: Interactive image; 1,4: Interactive image;
ChemSpider	1,2: 10609054; 1,3: 10609007; 1,4: 10465777;
PubChem CID	1,2: 15789245; 1,3: 15789246; 1,4: 15789247;
CompTox Dashboard (EPA)	1,2: DTXSID50911874; 1,3: DTXSID50578325;
	InChI 1,2: InChI=1S/C4H5NS/c1-2-4-6-5-3-1/h1-5H Key: AGIJRRREJXSQJR-UHFFFAOYSA-N; 1,3: InChI=1S/C4H5NS/c1-2-5-4-6-3-1/h1-3H,4H2 Key: NTYABNDBNKVWOO-UHFFFAOYSA-N; 1,4: InChI=1S/C4H5NS/c1-3-6-4-2-5-1/h1-5H Key: ZOXMLSDKXHNVOQ-UHFFFAOYSA-N;
	SMILES 1,2: C1=CNSC=C1; 1,3: C1N=CC=CS1; 1,4: C\1=C\N\C=C/S/1;
Properties
Chemical formula	C4H5NS
Molar mass	99.15 g·mol−1
Density	0.8465 g/cm3
Boiling point	76.5 °C
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Thiazine /ˈθaɪəziːn/ is an organic compound containing a ring of four carbon, one nitrogen and one sulfur atom. There are three isomers of thiazine, 1,2-thiazine, 1,3-thiazine, and 1,4-thiazine, which differ by the arrangement of the nitrogen and sulfur atoms in the ring.

Derivatives of thiazine, often referred to as thiazines, are used for dyes, tranquilizers and insecticides.