Biebrich scarlet

Biebrich scarlet
Names
	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 ;
3D model (JSmol)	Interactive image; Interactive image;
ChemSpider	4757734 ;
ECHA InfoCard	100.021.895
EC Number	224-084-5;
MeSH	Biebrich+scarlet
PubChem CID	5940755;
CompTox Dashboard (EPA)	DTXSID2063345 ;
	InChI InChI=1S/C22H16N4O7S2/c27-20-12-5-14-3-1-2-4-18(14)22(20)26-25-19-11-8-16(13-21(19)35(31,32)33)24-23-15-6-9-17(10-7-15)34(28,29)30/h1-13,25H,(H,28,29,30)(H,31,32,33)/b24-23+,26-22- Key: VJULFVPZZZJPDJ-PUNVMFJJSA-N ; InChI=1/C22H16N4O7S2.2Na/c27-20-12-5-14-3-1-2-4-18(14)22(20)26-25-19-11-8-16(13-21(19)35(31,32)33)24-23-15-6-9-17(10-7-15)34(28,29)30;;/h1-13,27H,(H,28,29,30)(H,31,32,33);;/q;2*+1/p-2 Key: VVAVKBBTPWYADW-NUQVWONBAJ; InChI=1/C22H16N4O7S2/c27-20-12-5-14-3-1-2-4-18(14)22(20)26-25-19-11-8-16(13-21(19)35(31,32)33)24-23-15-6-9-17(10-7-15)34(28,29)30/h1-13,25H,(H,28,29,30)(H,31,32,33)/b24-23+,26-22- Key: VJULFVPZZZJPDJ-PUNVMFJJBJ;
	SMILES [Na+].[Na+].[O-]S(=O)(=O)c1ccc(cc1)/N=N/c4ccc(/N=N/c2c3ccccc3ccc2O)c(c4)S([O-])(=O)=O; O=S(=O)(O)c4ccc(/N=N/c1ccc(c(c1)S(=O)(=O)O)N/N=C2/c3ccccc3\C=C/C2=O)cc4;
Properties
Chemical formula	C22H16N4O7S2
Molar mass	512.517
Hazards
GHS pictograms
GHS Signal word	Warning
GHS hazard statements	H302, H312, H315, H319, H332, H335
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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	Infobox references

Biebrich scarlet (C.I. 26905) is a molecule used in Lillie's trichrome.[1]

The dye was created in 1878 by the German chemist Rudolf Nietzki.[2]

References

Lillie, R. D. (1940). "Further Experiments with the Masson Trichrome Modification of Mallory's Connective Tissue Stain". Stain Technology. 15 (1). doi:10.3109/10520294009110327.
Schwarz, Holm-Dietmar (1999). "Nietzki, Rudolf Hugo". Neue Deutsche Biographie (in German). 19. Retrieved 2015-10-12.

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