Bismarck brown Y

Bismarck brown Y

300 px
Names
Other names Bismarck brown Manchester brown Phenylene brown Basic Brown 1 C.I. 21000 Vesuvine BA
Identifiers
CAS Number	8005-77-4 N
ChemSpider	13374 N
Jmol 3D model	Interactive image Interactive image
PubChem	13981
InChI InChI=1S/C18H18N8/c19-11-4-6-17(15(21)8-11)25-23-13-2-1-3-14(10-13)24-26-18-7-5-12(20)9-16(18)22/h1-10H,19-22H2/b25-23+,26-24+ N Key: BDFZFGDTHFGWRQ-OGGGYYITSA-N N InChI=1/C18H18N8/c19-11-4-6-17(15(21)8-11)25-23-13-2-1-3-14(10-13)24-26-18-7-5-12(20)9-16(18)22/h1-10H,19-22H2/b25-23+,26-24+ Key: BDFZFGDTHFGWRQ-OGGGYYITBR
SMILES CC1=C(C=C(C=C1)N=NC2=C(C=C(C(=C2)C)N)N)N=NC3=C(C=C(C(=C3)C)N)N N(=N/c1ccc(cc1N)N)\c3cccc(/N=N/c2ccc(N)cc2N)c3
Properties
Chemical formula	C21H24N8
Molar mass	388.48 g·mol−1
Vapor pressure	{{{value}}}
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N verify (what is YN ?)
Infobox references

Bismarck brown Y is a diazo dye. It is used in histology for staining tissues. It stains acid mucins to yellow color. It can be used with live cells. It is also used to stain cartilage in bone specimens, as one of Kasten's Schiff-type reagents in the periodic acid-Schiff stain to stain cellulose, and in Feulgen stain to stain DNA.

It was more common in the past; today it is partially replaced by other stains.

Bismarck brown Y is a constituent of Papanicolaou stains.

It can also be used as a counterstain for Victoria blue R for staining of acid-fast microorganisms.

References

Lillie, RD (1977) Conn's Biological Stains, 9th ed. Baltimore: Williams & Wilkins, p. 145-146.