Naphthol Yellow S
CAS number
846-70-8
Molecular formula
C10H4N2Na2O8S
Molecular weight
358.20 g/mol
IUPAC name
Flavianic acid sodium salt
2-Naphthalenesulfonic acid, 8-hydroxy-5,7-dinitro-, sodium salt (1:2)
2-Naphthalenesulfonic acid, 5,7-dinitro-8-hydroxy-, disodium salt
C.I. Acid Yellow 1
disodium 5,7-dinitro-8-oxidonaphthalene-2-sulphonate
Disodium 5,7-dinitro-8-oxidonaphthalene-2-sulfonate
1307 Yellow
1422 Yellow
A.F. Yellow No. 1
[Na+].[Na+].[O-]C1C2C=C(C=CC=2C(=CC=1[N+]([O-])=O)[N+]([O-])=O)S([O-])(=O)=O
CTIQLGJVGNGFEW-UHFFFAOYSA-L
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Merck
TCI
Merck
Merck