Research chemical
CAS Number: 642-59-1
Product details
For laboratory research and professional procurement workflows.
PubChem CID
13507
Exact Mass
537.981058
InChIKey
IRPXADUBAQAOKL-UHFFFAOYSA-N
IUPAC Name
3-hydroxy-4-[(4-sulfonaphthalen-1-yl)diazenyl]naphthalene-2,7-disulfonic acid
SMILES String
O=S(=O)(O)c1ccc2c(N=Nc3ccc(S(=O)(=O)O)c4ccccc34)c(O)c(S(=O)(=O)O)cc2c1
No physical property values available.
Properties are provided as catalog reference data and may be confirmed through supplier documentation when required.
Catalog navigation
Other public CAS pages in this catalog. These links support navigation across additional intermediates and do not imply equivalence, availability, or shared use.
FD&C Red No. 2 is identified by CAS 642-59-1, with molecular formula C20H14N2O10S3, molecular weight 538.5, InChIKey IRPXADUBAQAOKL-UHFFFAOYSA-N.
Yes. Submit an RFQ and specify COA requirements. Lot-specific COA depends on supplier confirmation.
Yes. Supplier SDS can be requested through the RFQ workflow before handling, storage, shipment, or procurement decisions.
Availability, pack size, lead time, and pricing are confirmed through RFQ.
Submit the CAS number, quantity, purity requirement, and destination country for sourcing review.
Heavy atom count
35
H-bond acceptors
12
H-bond donors
4
Rotatable bonds
5
Ring count
4
Aromatic rings
4
Topological polar surface area
208.06 Ų
Computed LogP
3.85
Fragment-like structure rule
No
Lead-like structure rule
No
Drug-like structure rule
No
Structure family
n heterocycle ligand
Precious metal motif
No
Transition metal motif
No
Phosphine ligand motif
No
N-heterocycle motif
Yes
Boronic acid motif
No
Computed structure descriptors generated from molecular structure. These are not experimental physical property values, supplier specifications, SDS data, or bioactivity claims.
Structural features
FD&C Red No. 2 (CAS 642-59-1) is maintained as a commercial cas reference with formula C20H14N2O10S3, molecular weight 538. 50 g/mol, PubChem CID 13507.
Sourcing context
Catalog reference for RFQ preparation, supplier confirmation, and research chemical sourcing review.
Research use context
Use this page for CAS identity lookup, internal catalog search, and commercial discovery workflows; structure-derived tags include nitrogen-containing heterocycle.
Documentation needs
Review supplier documentation before handling; for research use only.
Safety and handling reference content is available through documentation requests.
For supplier-issued SDS, request documentation before handling, storage, shipment, or procurement decisions.