Research chemical
CAS Number: 743439-21-6
![4-(5-Ethyl-6-methyl-4-oxo-3,4-dihydrothieno[2,3-d]pyrimidin-2-yl)benzoic acid molecular structure, CAS 743439-21-6](/structure-images/743439-21-6.png?v=struct-v3)
Product details
For laboratory research and professional procurement workflows.
PubChem CID
2099954
Exact Mass
314.072513
InChIKey
LHLBGCWMZBFFPO-UHFFFAOYSA-N
IUPAC Name
4-(5-ethyl-6-methyl-4-oxo-3H-thieno[2,3-d]pyrimidin-2-yl)benzoic acid
SMILES String
CCc1c(C)sc2nc(-c3ccc(C(=O)O)cc3)[nH]c(=O)c12
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.
4-(5-Ethyl-6-methyl-4-oxo-3,4-dihydrothieno[2,3-d]pyrimidin-2-yl)benzoic acid is identified by CAS 743439-21-6, with molecular formula C16H14N2O3S, molecular weight 314.4, InChIKey LHLBGCWMZBFFPO-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
22
H-bond acceptors
5
H-bond donors
2
Rotatable bonds
3
Ring count
3
Aromatic rings
3
Topological polar surface area
83.05 Ų
Computed LogP
3.22
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
4-(5-Ethyl-6-methyl-4-oxo-3,4-dihydrothieno[2,3-d]pyrimidin-2-yl)benzoic acid (CAS 743439-21-6) is maintained as a commercial cas reference with formula C16H14N2O3S, molecular weight 314. 40 g/mol, PubChem CID 2099954.
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.