Cas No.: 779-27-1
PRODUCT INFORMATION
Description
Synonyms: Umbelliferone-3-carboxylic Acid. This is the free-acid form of a classic blue-fluorescent dye. The 7-hydroxy group's protonation state is pH-dependent (pKa ~7.8), making its fluorescence emission pH-sensitive. The carboxylic acid handle can be activated (e.g., with EDC/NHS) to label primary amines. It is used as a building block for pH-sensitive probes and enzyme substrates.
Molecular Weight
206.15
Purity
>98.0%
Formula
C₁₀H₆O₅
Product Type
Fluorescent Labels ; Acceptors and Donors for FRET
Ex
325 nm
Em
441 nm
Form (20 deg.C)
Solid
Storage Condition
<0°C
Molecular Structure
For Research Use Only | Not For Clinical Use
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