Research chemical
CAS Number: 40235-42-5
![1H-5-Oxa-1,2,3-triaza-cyclopenta[a]naphthalen-4-one molecular structure, CAS 40235-42-5](/structure-images/40235-42-5.png?v=struct-v2)
Product details
For laboratory research and professional procurement workflows.
PubChem CID
3613756
Exact Mass
187.038176
InChIKey
YGEURFRKJHVNCQ-UHFFFAOYSA-N
IUPAC Name
2H-chromeno[3,4-d]triazol-4-one
SMILES String
O=c1oc2ccccc2c2[nH]nnc12
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.
1H-5-Oxa-1,2,3-triaza-cyclopenta[a]naphthalen-4-one is identified by CAS 40235-42-5, with molecular formula C9H5N3O2, molecular weight 187.15, InChIKey YGEURFRKJHVNCQ-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
14
H-bond acceptors
5
H-bond donors
1
Rotatable bonds
0
Ring count
3
Aromatic rings
3
Topological polar surface area
71.78 Ų
Computed LogP
1.06
Fragment-like structure rule
Yes
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
1H-5-Oxa-1,2,3-triaza-cyclopenta[a]naphthalen-4-one (CAS 40235-42-5) is maintained as a commercial cas reference with formula C9H5N3O2, molecular weight 187. 15 g/mol, PubChem CID 3613756.
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, fragment-like structure profile, 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.