Research chemical
CAS Number: 138-28-3
Product details
For laboratory research and professional procurement workflows.
PubChem CID
67311
Exact Mass
307.062677
InChIKey
FUWKWQCNMNPILC-UHFFFAOYSA-N
IUPAC Name
3-[(4-amino-3-methoxyphenyl)diazenyl]benzenesulfonic acid
SMILES String
COC1=C(C=CC(=C1)N=NC2=CC(=CC=C2)S(=O)(=O)O)N
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.
Benzenesulfonic acid, 3-(2-(4-amino-3-methoxyphenyl)diazenyl)- is identified by CAS 138-28-3, with molecular formula C13H13N3O4S, molecular weight 307.33, InChIKey FUWKWQCNMNPILC-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
21
H-bond acceptors
7
H-bond donors
3
Rotatable bonds
4
Ring count
2
Aromatic rings
2
Topological polar surface area
114.34 Ų
Computed LogP
2.94
Fragment-like structure rule
No
Lead-like structure rule
Yes
Drug-like structure rule
Yes
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
Benzenesulfonic acid, 3-(2-(4-amino-3-methoxyphenyl)diazenyl)- (CAS 138-28-3) is maintained as a commercial cas reference with formula C13H13N3O4S, molecular weight 307. 33 g/mol, PubChem CID 67311.
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, lead-like structure profile, drug-like rule profile.
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.