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Chemical structure of Fluorescein-digalactoside

GC33589

Fluorescein-digalactoside

Also listed as Fluorescein di(β-D-galactopyranoside) (FDG)

Fluorescein di(β-D-galactopyranoside) (FDG) is a fluorogenic substrate for β-galactosidase (Λex=485 nm, Λem=535 nm)

ChemicalCAS17817-20-8MW656.59FormulaC32H32O15
CAS number
17817-20-8
Molecular weight
656.59
Formula
C32H32O15
Solubility
DMSO ： 5·56 mg/mL (8·47 mM; ultrasonic and warming and heat to 60°C)
InChIKey
ZTOBILYWTYHOJB-WBCGDKOGSA-N
Catalogue number
GC33589
Brand
GLPBIO
Computed properties PubChem CID 122063 · XLogP -0.2 · TPSA 234 Ų · H-bond donors 8
XLogP
-0.2
TPSA
234 Ų
H-bond donors
8
H-bond acceptors
15
Rotatable bonds
6
Heavy atoms
47

SMILES C1=CC=C2C(=C1)C(=O)OC23C4=C(C=C(C=C4)O[C@H]5[C@@H]([C@H]([C@H]([C@H](O5)CO)O)O)O)OC6=C3C=CC(=C6)O[C@H]7[C@@H]([C@H]([C@H]([C@H](O7)CO)O)O)O

Computed descriptors from PubChem (CID 122063), public domain. Identity cross-checked against the supplier's molecular formula and weight — verify before use.

Ordering in Israel

Lead time
Ships from the manufacturer to your lab in 8–14 business days; customs and cold chain handled by LABO Scientific.
Pricing
Quoted in ILS, excl. VAT. Add the item to your quote and we confirm the final price, usually the same business day.
Documents
Lot certificate of analysis and manufacturer SDS are emailed with your order confirmation.
Who we serve
Universities, hospitals and biotech companies across Israel. Research use only — not for diagnostic or therapeutic use.