Biebrich scarlet
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Biebrich scarlet
IUPAC name	2-[(2Z)-2-(2-oxonaphthalen-1-ylidene)hydrazinyl]-5-(4-sulfophenyl)diazenyl-benzenesulfonic acid
Other names	Croceine scarlet
Identifiers
CAS number	[4196-99-0]
PubChem	5940755
MeSH	Biebrich+scarlet
SMILES	C1=CC=C2C(=C1)C=CC(=O)C2=NNC3=C(C=C(C=C3)N=NC4=CC=C(C=C4)S(=O)(=O)O)S(=O)(=O)O
Properties
Molecular formula	C22H16N4O7S2
Molar mass	512.517
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox references

Biebrich scarlet (C.I. 26905) is a molecule used in Lillie's trichrome.

See also

• Masson's trichrome stain

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