Tartrazine(1934-21-0) IR2
Product NameTartrazine
CAS1934-21-0
Molecular FormulaC16H13N4NaO9S2
Molecular Weight492.41
InChIInChI=1S/C16H12N4O9S2.Na.H/c21-15-13(18-17-9-1-5-11(6-2-9)30(24,25)26)14(16(22)23)19-20(15)10-3-7-12(8-4-10)31(27,28)29;;/h1-8,13H,(H,22,23)(H,24,25,26)(H,27,28,29);;/b18-17+;;
InChIKey HASYIQLQGHIUPV-QIKYXUGXSA-N
SmilesO=C1C(C(C(=O)O)=NN1C1C=CC(S(O)(=O)=O)=CC=1)/N=N/C1C=CC(S(O)(=O)=O)=CC=1.[NaH]
400 MHz in DMSO-d6
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1H NMR 399.65 MHz C16 H9 N4 Na3 O9 S2 0.039 g : 0.5 ml DMSO-d6 tartrazine 
Assign. Shift(ppm)
A 18.9 B 7.98 C 7.73 D 7.72 E 7.43
Hz ppm Int.7561.75 18.921 480 7553.50 18.901 31 7552.40 18.898 25 7551.58 18.896 24 3194.99 7.995 688 3186.47 7.974 865 3094.09 7.743 793 3091.07 7.735 1000 3085.57 7.721 972 3082.27 7.713 894 2974.22 7.443 727 2965.43 7.421 675
KBr disc
nujol mull
