A mixture of isomers of: 1,1'-[(3,5(or 2,4 or 4,6 or 2,6)-dihydroxy-o(or m or p)-phenylene)bis(azo-meta-phenyleneazo{1-[3-(dimethylamino)propyl]-1,2-dihydro-6-hydroxy-4-methyl-2-oxopyridine-5,3-diyl})]dipyridinium-dichloride-dihydrochloride; 1-(1-[3-(dimethylamino)propyl]-5-{3-[x-(4-{1-[3-(dimethylamino)propyl]-1,6-dihydro-2-hydroxy-4-methyl-6-oxo-5-pyridinio-3-pyridylazo}phenylazo)-2,4(or 2,6 or 3,5 or 4,6)-dihydroxyphenylazo]phenylazo}-1,2-dihydro-6-hydroxy-4-methyl-2-oxo-3-pyridyl)pyridinium-dichloride-dihydrochloride (where x is variable)

Reference substances

IUPAC name:

1-(1-[3-(Dimethylamino)propyl]-5-{3-[x-(4-{1-[3-(dimethylamino)propyl]-1,6-dihydro-2-hydroxy-4-methyl-6-oxo-5-pyridinio-3-pyridylazo}phenyl-azo)-2,4(or 2,6 or 3,5)-dihydroxy-phenylazo]phenylazo}-1,2-dihydro-6-hydroxy-4-methyl-2-oxo-3-pyridyl)-pyridinium dichloride hydro-
chloride

(where the locant x is variable)


[Dihydroxyphenylene refers to the
following isomers:


3,5-dihydroxy-ortho-phenylene
2,4-dihydroxy-meta-phenylene
4,6-dihydroxy-meta-phenylene
2,6-dihydroxy-para-phenylene]

Molecular and structural information

Molecular formula:

C50H56Cl4N14O6

Molecular weight:

ca. 1 090

SMILES notation:

[Cl-].[Cl-].Cl.Cl.CN(C)CCCN1C(=O)C([n+]2ccccc2)=C(C)C(/N=N/c2ccc(cc2)/N=N/c2c(O)cc(cc2O)/N=N/c2cccc(c2)/N=N/C2=C(O)N(CCCN(C)C)C(=O)C(=C2C)[n+]2ccccc2)=C1O

Structural formula: