FD&C YELLOW NO. 6

Details

Stereochemistry	ACHIRAL
Molecular Formula	C16H10N2O7S2.2Na
Molecular Weight	452.369
Optical Activity	NONE
Defined Stereocenters	0 / 0
E/Z Centers	1
Charge	0

SHOW SMILES / InChI

SMILES

[Na+].[Na+].OC1=CC=C2C=C(C=CC2=C1\N=N\C3=CC=C(C=C3)S([O-])(=O)=O)S([O-])(=O)=O

InChI

InChIKey=OIQPTROHQCGFEF-QIKYXUGXSA-L

InChI=1S/C16H12N2O7S2.2Na/c19-15-8-1-10-9-13(27(23,24)25)6-7-14(10)16(15)18-17-11-2-4-12(5-3-11)26(20,21)22;;/h1-9,19H,(H,20,21,22)(H,23,24,25);;/q;2*+1/p-2/b18-17+;;

HIDE SMILES / InChI

Molecular Formula	Na
Molecular Weight	22.9898
Charge	1
Count	MOL RATIO 2 MOL RATIO (average)

Stereochemistry	ACHIRAL
Additional Stereochemistry	No
Defined Stereocenters	0 / 0
E/Z Centers	0
Optical Activity	NONE

Molecular Formula	C16H10N2O7S2
Molecular Weight	406.39
Charge	-2
Count	MOL RATIO 1 MOL RATIO (average)

Stereochemistry	ACHIRAL
Additional Stereochemistry	No
Defined Stereocenters	0 / 0
E/Z Centers	1
Optical Activity	NONE

Description

D&C Yellow No. 6 is an excipient (pharmacologically inactive substance). D&C Yellow No. 6 is a color additive. It has been approved for use in food, drugs, and cosmetics. D&C Yellow No. 6 is chemically manufactured by diazotizing 4-aminobenzenesulfonic acid using hydrochloric acid and sodium nitrite or sulfuric acid and sodium nitrite. The diazo compound is coupled with 6-hydroxy-2-naphthalene-sulfonic acid. The dye is isolated as the sodium salt and dried. The trisodium salt of 3-hydroxy-4-[(4-sulfophenyl)azo]-2,7-naphthalenedisulfonic acid which may be blended with the principal color is prepared in the same manner except the diazo benzenesulfonic acid is coupled with 3-hydroxy-2,7-naphthalenedisulfonic acid.