FD&C Red No. 2

3-hydroxy-4-[(4-sulfonaphthalen-1-yl)diazenyl]naphthalene-2,7-disulfonic acid

CAS: 642-59-1

Molecular Formula	`C20H14N2O10S3`
Molecular Weight	538.5 g/mol
LogP	2.6
Topological Polar Surface Area	233.0 A2
Hydrogen Bond Donors	4
Hydrogen Bond Acceptors	12
Rotatable Bonds	5
Exact Mass	537.9811
Heavy Atoms	35
Complexity	1120.0

Chemical Identifiers

CAS Number	642-59-1
SMILES	`C1=CC=C2C(=C1)C(=CC=C2S(=O)(=O)O)N=NC3=C4C=CC(=CC4=CC(=C3O)S(=O)(=O)O)S(=O)(=O)O`
InChIKey	`IRPXADUBAQAOKL-UHFFFAOYSA-N`

📖 Product Overview

FD&C Red No. 2 (CAS: 642-59-1) is a chemical compound with molecular formula C20H14N2O10S3 and molecular weight 538.5 g/mol. Its IUPAC systematic name is 3-hydroxy-4-[(4-sulfonaphthalen-1-yl)diazenyl]naphthalene-2,7-disulfonic acid. LogP 2.6 Topological Polar Surface Area 233.0 A2 Hydrogen Bond Donors 4 Hydrogen Bond Acceptors 12 Rotatable Bonds 5 Exact Mass 537.9811 Heavy Atoms 35 Complexity 1120.0 InChI Key: IRPXADUBAQAOKL-UHFFFAOYSA-N. SMILES: C1=CC=C2C(=C1)C(=CC=C2S(=O)(=O)O)N=NC3=C4C=CC(=CC4=CC(=C3O)S(=O)(=O)O)S(=O)(=O)O.

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Safety Data Sheet (MSDS / SDS) View the Laboratory Chemical Safety Summary (LCSS) on PubChem — includes GHS classifications, hazard statements, first aid measures, and handling precautions.

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Yes, we offer sample quantities for quality testing. Please submit an inquiry with your requirements and we will arrange samples accordingly.

What documentation do you provide with the product?

We provide COA (Certificate of Analysis), MSDS (Material Safety Data Sheet), and technical data sheets with each shipment.

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