Research chemical
CAS Number: 2321-07-5
![3',6'-Dihydroxy-3H-spiro[isobenzofuran-1,9'-xanthen]-3-one , Fluorescein molecular structure, CAS 2321-07-5](/structure-images/2321-07-5.png?v=struct-v2)
Product details
For laboratory research and professional procurement workflows.
PubChem CID
16850
Exact Mass
332.06847
InChIKey
GNBHRKFJIUUOQI-UHFFFAOYSA-N
IUPAC Name
3',6'-dihydroxyspiro[2-benzofuran-3,9'-xanthene]-1-one
SMILES String
OC1=CC=C2C(OC3=CC(O)=CC=C3C22OC(=O)C3=CC=CC=C23)=C1
Appearance
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.
3',6'-Dihydroxy-3H-spiro[isobenzofuran-1,9'-xanthen]-3-one , Fluorescein is identified by CAS 2321-07-5, with molecular formula C20H12O5, molecular weight 332.31, InChIKey GNBHRKFJIUUOQI-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.
Form: Crystal - Powder
Physical State
Crystal - Powder
Melting Point
315.0 °C
Properties are provided as catalog reference data and may be confirmed through supplier documentation when required.
Heavy atom count
25
H-bond acceptors
5
H-bond donors
2
Rotatable bonds
0
Ring count
5
Aromatic rings
3
Topological polar surface area
75.99 Ų
Computed LogP
3.67
Fragment-like structure rule
No
Lead-like structure rule
Yes
Drug-like structure rule
Yes
Structure family
other structure rule
Precious metal motif
No
Transition metal motif
No
Phosphine ligand motif
No
N-heterocycle motif
No
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
Research Catalog Compound - Documentation Review Required (CAS 2321-07-5) is listed for specialty intermediate sourcing for research synthesis workflows.
Sourcing context
Catalog reference for RFQ preparation, supplier confirmation, and research chemical sourcing review.
Research use context
Typical research procurement context: building-block procurement where identity and documentation are checked before use, with buyer review before selection.
Documentation needs
Preliminary handling notes only; confirm supplier SDS before handling. Review storage, transport, and documentation requirements internally before order acceptance.
Safety and handling reference content is available through documentation requests.
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.
Safety Reference / SDS RequestCertificate 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
Non-public references are shown as text only and do not imply equivalence, availability, or shared use.