thiazine

{{Short description|Organic compound}}

{{chembox

| verifiedrevid = 425007809

| Name = 1,4-Thiazine

| ImageFile =

| ImageFile1 = 4H-1,4-thiazine with Atom Numbers.svg

| ImageSize1 = 100px

| PIN = 4H-1,4-Thiazine

| OtherNames = Parathiazine

| Section1 = {{Chembox Identifiers

| index2_label = 1,2

| index3_label = 1,3

| index4_label = 1,4

| CASNo=290-57-3

| CASNo2=11084-06-3

| CASNo3 = 27813-20-3

| PubChem2=15789245

| PubChem3 = 15789246

| PubChem4 = 15789247

| ChemSpiderID2 = 10609054

| ChemSpiderID3 = 10609007

| ChemSpiderID4 = 10465777

| DTXSID2 = DTXSID50911874

| DTXSID3 = DTXSID50578325

| SMILES2 = C1=CNSC=C1

| SMILES3 = C1N=CC=CS1

| SMILES4 = C\1=C\N\C=C/S/1

| InChI4 = 1S/C4H5NS/c1-3-6-4-2-5-1/h1-5H

| InChIKey4 = ZOXMLSDKXHNVOQ-UHFFFAOYSA-N

| InChI2=1S/C4H5NS/c1-2-4-6-5-3-1/h1-5H

| InChIKey2=AGIJRRREJXSQJR-UHFFFAOYSA-N

| InChI3=1S/C4H5NS/c1-2-5-4-6-3-1/h1-3H,4H2

| InChIKey3 = NTYABNDBNKVWOO-UHFFFAOYSA-N

}}

| Section2 = {{Chembox Properties

| Formula=

| C=4 | H=5 | N=1 | S=1

| MolarMass=

| Appearance=

| Density=0.8465 g/cm³

| MeltingPt=

| BoilingPt=76.5 °C

| Solubility=

| pKa =

| pKb =

}}

| Section3 = {{Chembox Hazards

| MainHazards=

| FlashPt=

| AutoignitionPt =

}}

| Section4 =

| Section5 =

| Section6 =

| Section8 = {{Chembox Related

| OtherCompounds =

}}

}}

Thiazine {{IPAc-en|ˈ|θ|aɪ|ə|z|iː|n}} 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.