Research chemical
CAS Number: 21537-95-1
![3-Bromo-s-triazolo[3,4-a]phthalazine molecular structure, CAS 21537-95-1](/structure-images/21537-95-1.png?v=struct-v3)
Product details
For laboratory research and professional procurement workflows.
PubChem CID
29975068
Exact Mass
247.96976
InChIKey
RPIFZODYUJCSNC-UHFFFAOYSA-N
IUPAC Name
3-bromo-[1,2,4]triazolo[3,4-a]phthalazine
SMILES String
Brc1nnc2c3ccccc3cnn12
No physical property values available.
Properties are provided as catalog reference data and may be confirmed through supplier documentation when required.
Catalog navigation
Linked by recorded structural or research relationships, not interchangeable products. Check the exact CAS, specification and availability on the linked product page.
3-Bromo-s-triazolo[3,4-a]phthalazine is identified by CAS 21537-95-1, with molecular formula C9H5BrN4, molecular weight 249.07, InChIKey RPIFZODYUJCSNC-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
4
H-bond donors
0
Rotatable bonds
0
Ring count
3
Aromatic rings
3
Topological polar surface area
43.08 Ų
Computed LogP
2.04
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
3-Bromo-s-triazolo[3,4-a]phthalazine (CAS 21537-95-1) is maintained as a commercial cas reference with formula C9H5BrN4, molecular weight 249. 07 g/mol, PubChem CID 29975068.
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.