55293-75-9

Basic information

• Product Name: 2-[(2Z)-2H-1,4-Benzothiazin-2-ylidene]-2H-1,4-benzothiazine
• Synonyms: 2-[(2Z)-2H-1,4-Benzothiazin-2-ylidene]-2H-1,4-benzothiazine
• CAS NO: 55293-75-9
• Molecular Formula: C16H10N2S2
• Molecular Weight: 294.39
• Mol File: 55293-75-9.mol
• Article Data: 1

Chemical Properties

• Boiling Point: 422.9±45.0 °C(Predicted)
• Appearance: /
• Density: 1.37±0.1 g/cm3(Predicted)
• PKA: 2.59±0.20(Predicted)
• CAS DataBase Reference: 2-[(2Z)-2H-1,4-Benzothiazin-2-ylidene]-2H-1,4-benzothiazine(CAS DataBase Reference)
• NIST Chemistry Reference: 2-[(2Z)-2H-1,4-Benzothiazin-2-ylidene]-2H-1,4-benzothiazine(55293-75-9)
• EPA Substance Registry System: 2-[(2Z)-2H-1,4-Benzothiazin-2-ylidene]-2H-1,4-benzothiazine(55293-75-9)

Safety Data

• Hazardous Substances Data: 55293-75-9(Hazardous Substances Data)

Downstream Products

• 55293-74-8 trans-Δ^2,2'-bi-(2H-1,4-benzothiazine) 

Relevant articles and documents

Synthesis and photochromism of Δ2,2′-BI-(2H-1,4-benzothiazine)

Δ2,2′-Bi- (2H-1,4-benzothiazine) (4), the parent ring system of a group of amino-acid pigments (trichosiderins) from red hair and feathers, has been synthesized by a simple and novel method involving air oxidation of 2H-1,4-benzothiazine, generated in situ by treatment of 1-(o-aminophenylthio)-2,2-diethoxyethane (1). This procedure yields only the yellow trans-isomer 4, which in solution exhibits marked photochromism, being reversibly converted into the red unstable cis-form 5 on brief irradiation with sunlight.