17817-20-8,FDG, Fluorescein di-b-D-galactopyranoside, CAS:17817-20-8

17817-20-8,FDG,Fluorescein di-b-D-galactopyranoside,
CAS:17817-20-8
C32H32O15 / 656.59
MFCD00077344

荧光素二(beta-D-吡喃半乳糖苷), Fluorescein di-b-D-galactopyranoside

Fluorescein di-β-galactopyranoside is a fluorogenic substrate for β-galactosidase. Upon enzymatic cleavage by β-galactosidase, fluorescein is released and its fluorescence can be used to quantify β-galactosidase activity. Fluorescein displays excitation/emission maxima of 490/514 nm, respectively.

CAS Number	17817-20-8
Product Name	Fluorescein-digalactoside
IUPAC Name	3',6'-bis[[(2S,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy]spiro[2-benzofuran-3,9'-xanthene]-1-one
Molecular Formula	C32H32O15
Molecular Weight	656.6 g/mol
InChI	InChI=1S/C32H32O15/c33-11-21-23(35)25(37)27(39)30(45-21)42-13-5-7-17-19(9-13)44-20-10-14(43-31-28(40)26(38)24(36)22(12-34)46-31)6-8-18(20)32(17)16-4-2-1-3-15(16)29(41)47-32/h1-10,21-28,30-31,33-40H,11-12H2/t21-,22-,23+,24+,25+,26+,27-,28-,30-,31-/m1/s1
InChI Key	ZTOBILYWTYHOJB-WBCGDKOGSA-N
SMILES	C1=CC=C2C(=C1)C(=O)OC23C4=C(C=C(C=C4)OC5C(C(C(C(O5)CO)O)O)O)OC6=C3C=CC(=C6)OC7C(C(C(C(O7)CO)O)O)O
Synonyms	fluorescein-di-beta-D-galactopyranoside, fluorescein-di-beta-D-galactoside, fluorescein-digalactoside
Canonical SMILES	C1=CC=C2C(=C1)C(=O)OC23C4=C(C=C(C=C4)OC5C(C(C(C(O5)CO)O)O)O)OC6=C3C=CC(=C6)OC7C(C(C(C(O7)CO)O)O)O
Isomeric 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

CAS No: 17817-20-8 Synonyms: FDG MDL No: MFCD00077344 Chemical Formula: C32H32O15 Molecular Weight: 656.59	In Stock.
References: 1. Rotman B, et al., Proc. Natl. Acad. Sci. 1963, USA, 50, 12. Hofmann J, Sernetz M, Anal. Biochem. 1983, 131, 180

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