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Chemical structure of C.I. Acid Yellow 23

GC30256

C.I. Acid Yellow 23

Also listed as Tartrazine (Acid Yellow 23)

Tartrazine (Acid Yellow 23) is a synthetic lemon yellow azo dye primarily used as a food coloring

ChemicalCAS1934-21-0MW534.36FormulaC16H9N4Na3O9S2
CAS number
1934-21-0
Molecular weight
534.36
Formula
C16H9N4Na3O9S2
Solubility
DMSO ： 10 mg/mL (18·71 mM)
InChIKey
ZLWLTDZLUVBSRJ-UHFFFAOYSA-K
Catalogue number
GC30256
Brand
GLPBIO
Computed properties PubChem CID 16013 · TPSA 228 Ų · H-bond donors 1 · H-bond acceptors 12
TPSA
228 Ų
H-bond donors
1
H-bond acceptors
12
Rotatable bonds
3
Heavy atoms
34

SMILES C1=CC(=CC=C1N=NC2=C(NN(C2=O)C3=CC=C(C=C3)S(=O)(=O)[O-])C(=O)[O-])S(=O)(=O)[O-].[Na+].[Na+].[Na+]

Computed descriptors from PubChem (CID 16013), public domain. Identity cross-checked against the supplier's molecular formula and weight — verify before use.

Ordering in Israel

Lead time
Ships from the manufacturer to your lab in 8–14 business days; customs and cold chain handled by LABO Scientific.
Pricing
Quoted in ILS, excl. VAT. Add the item to your quote and we confirm the final price, usually the same business day.
Documents
Lot certificate of analysis and manufacturer SDS are emailed with your order confirmation.
Who we serve
Universities, hospitals and biotech companies across Israel. Research use only — not for diagnostic or therapeutic use.