Alcian yellow is an azo dye with the formula (CH3[(CH3N)2CS]2C6H2SNCC6H4)2N2. Its structure consists of a largely conjugated array of benzene, benzothiazole and isothiouronium units.
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IUPAC name
{(E)-1,2-Diazenediylbis[4,1-phenylene(6-methyl-1,3-benzothiazole-2,5-diyl)methylenesulfanediyl]}bis[(dimethylamino)-N,N-dimethylmethaniminium]
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Other names
Ingrain Yellow 1
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Identifiers | |
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3D model (JSmol)
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ChEBI |
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ChemSpider |
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ECHA InfoCard | 100.115.894 |
PubChem CID
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Properties | |
C40H46N8S4 | |
Molar mass | 767.11 g/mol |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references
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Alcian yellow is used in histology in conjunction with toluidine blue to help visualize H. pylori.[1] The resulting structures are stained as follows:[2]
– Mucin: yellow
– H. pylori: blue
– Other cellular components/background: shades of blue