9793. Trypan Red

Nomenclature

CAS number: 574-64-1
4,4′-[(3-Sulfo[1,1′-biphenyl]-4,4′-diyl)bis(azo)]bis[3-amino-2,7-naphthalenedisulfonic acid] pentasodium salt; 4,4′-[(3-sulfo-4,4′-biphenylene)bis(azo)]bis(3-amino-2,7-naphthalenedisulfonic acid) pentasodium salt; pentasodium 4,4′-[(3-sulfo-4,4′-biphenylene)bis(azo)]bis(3-amino-2,7-naphthalenedisulfonate); C.I. 22850.
C32H19N6Na5O15S5; mol wt 1002.80.
C 38.33%, H 1.91%, N 8.38%, Na 11.46%, O 23.93%, S 15.99%.

Description and references

Prepd by coupling diazotized 4,4′-diaminobiphenyl-3-sulfonic acid with sodium 2-amino-3,6-naphthalenedisulfonate: Krauss, J. Am. Chem. Soc. 36, 961 (1914); Colour Index vol. 4 (3rd ed., 1971) p 4181.

Chemical structure

Properties

Reddish-brown powder. Sol in water. Practically insol in alcohol.

Use

Biological stain.

Therapeutic Category

Antiprotozoal (Trypanosoma).

Therapeutic Category (Veterinary)

Has been used as a trypanocide.

Keywords

Antiprotozoal (Trypanosoma)