Research chemical
CAS Number: 21278-45-5
![4,4-(1,2-Diazenediyl)bis[1,2-benzenedicarboxylic acid] molecular structure, CAS 21278-45-5](/structure-images/21278-45-5.png?v=struct-v2)
Product details
For laboratory research and professional procurement workflows.
PubChem CID
18469706
Exact Mass
358.043715
InChIKey
PHDVEJUSUBVDMY-UHFFFAOYSA-N
IUPAC Name
4-[(3,4-dicarboxyphenyl)diazenyl]phthalic acid
SMILES String
O=C(O)c1ccc(N=Nc2ccc(C(=O)O)c(C(=O)O)c2)cc1C(=O)O
No physical property values available.
XLogP
1.8
Properties are provided as catalog reference data and may be confirmed through supplier documentation when required.
Heavy atom count
26
H-bond acceptors
10
H-bond donors
4
Rotatable bonds
6
Ring count
2
Aromatic rings
2
Topological polar surface area
173.92 Ų
Computed LogP
2.89
Structural features
4,4-(1,2-Diazenediyl)bis[1,2-benzenedicarboxylic acid] (CAS 21278-45-5) is listed in the Advanced Chemicals portfolio, with molecular formula C16H10N2O8 and molecular weight 358. 26 g/mol.
Sourcing context
Catalog reference for RFQ preparation, supplier confirmation, and research chemical sourcing review.
Research use context
Intended for research building-block and synthetic chemistry workflows; structure-derived tags include nitrogen-containing heterocycle.
Documentation needs
SDS signal word: Warning; hazard codes: H302, H315, H319, H335; For research use only.
For supplier-issued SDS, request documentation before handling, storage, shipment, or procurement decisions.
Preliminary Safety Reference
For supplier-issued SDS or COA, submit a documentation request.
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.
Procurement notes
MolGraph uses public price and availability evidence as a starting point, then confirms current stock, quotation, COA/SDS, lot specification, lead time, and shipment documentation before final acceptance.
Use the quote panel for visible public options. Additional quantities or specifications can be reviewed by RFQ.
Purity, lot identity, and batch-specific documentation are confirmed before procurement decisions.
Supplier-issued COA and SDS can be requested before handling, storage, shipment, or procurement decisions.
Final quote depends on quantity, lead time, destination, and supplier confirmation.
4,4-(1,2-Diazenediyl)bis[1,2-benzenedicarboxylic acid] is listed as in-stock / available for research-use sourcing review. Final availability, lot specification, and lead time are confirmed by RFQ.
The page shows a public reference price in the quote panel. Submit an RFQ to confirm current price, quantity breaks, lead time, and destination-specific shipping requirements.
Yes. Supplier-issued COA and SDS can be requested during the RFQ workflow. Lot-specific documents depend on supplier and batch confirmation.
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.
Hazard statements: H302, H315, H319, H335
Supplier SDS hazard code reference; confirm full text in supplier documentation.
Precautionary statements: P261, P280, P301+P312, P302+P352, P305+P351+P338
Supplier SDS precautionary code reference; confirm full text in supplier documentation.
Shipment review: Required
Certificate of Analysis (COA): By request
Supplier Safety Data Sheet (SDS): By request
Purity and pack size confirmation: By request
Availability and lead time review: Confirmed by RFQ
Shipment documentation review: By request
For supplier-issued documentation by request, use the RFQ actions on this page.Review preliminary safety reference
Additional text reference cues are not available for this catalog entry.
Non-public references are shown as text only and do not imply equivalence, availability, or shared use.