AAT Bioquest

CLF [Cholyl-Lys-Fluorescein]

Product Image
Product Image
Gallery Image 1
Ordering information
Catalog Number
Unit Size
Add to cart
Additional ordering information
InternationalSee distributors
Bulk requestInquire
Custom sizeInquire
ShippingStandard overnight for United States, inquire for international
Request quotation
Physical properties
Molecular weight926.12
Spectral properties
Absorbance (nm)487
Correction Factor (260 nm)0.32
Correction Factor (280 nm)0.35
Extinction coefficient (cm -1 M -1)800001
Excitation (nm)498
Emission (nm)517
Quantum yield0.79001, 0.952
Storage, safety and handling
H-phraseH303, H313, H333
Hazard symbolXN
Intended useResearch Use Only (RUO)
R-phraseR20, R21, R22
StorageFreeze (< -15 °C); Minimize light exposure


See also: Fluoresceins
Molecular weight
Absorbance (nm)
Correction Factor (260 nm)
Correction Factor (280 nm)
Extinction coefficient (cm -1 M -1)
Excitation (nm)
Emission (nm)
Quantum yield
0.79001, 0.952
CLF is a fluorescein-labeled bile acid analog that closely parallels the cellular binding and uptake properties of cholic acid derivatives. It is a divalent 'unipolar' anionic fluorescent monohydroxy bile salt analog with physical, biological and cholestatic properties that are similar to those of lithocholate, glycolithocholate and their derivatives and thus offers a potentially useful probe for studying mechanisms of monohydroxy bile salt-induced cholestasis at the hepatocellular level. CLF is currently used as a tool for the visualization of bile acid transport within liver tissue.


Common stock solution preparation

Table 1. Volume of DMSO needed to reconstitute specific mass of CLF [Cholyl-Lys-Fluorescein] to given concentration. Note that volume is only for preparing stock solution. Refer to sample experimental protocol for appropriate experimental/physiological buffers.

0.1 mg0.5 mg1 mg5 mg10 mg
1 mM107.977 µL539.887 µL1.08 mL5.399 mL10.798 mL
5 mM21.595 µL107.977 µL215.955 µL1.08 mL2.16 mL
10 mM10.798 µL53.989 µL107.977 µL539.887 µL1.08 mL

Molarity calculator

Enter any two values (mass, volume, concentration) to calculate the third.

Mass (Calculate)Molecular weightVolume (Calculate)Concentration (Calculate)Moles


Open in Advanced Spectrum Viewer

Spectral properties

Absorbance (nm)487
Correction Factor (260 nm)0.32
Correction Factor (280 nm)0.35
Extinction coefficient (cm -1 M -1)800001
Excitation (nm)498
Emission (nm)517
Quantum yield0.79001, 0.952



View all 1 citations: Citation Explorer
A Pillar and Perfusion Plate Platform for Robust Human Organoid Culture and Analysis
Authors: Kang, Soo-Yeon and Kimura, Masaki and Shrestha, Sunil and Lewis, Phillip and Lee, Sangjoon and Cai, Yuqi and Joshi, Pranav and Acharya, Prabha and Liu, Jiafeng and Yang, Yong and others,
Journal: bioRxiv (2023): 2023--03


View all 42 references: Citation Explorer
Inhibition of bile acid transport across Na+/taurocholate cotransporting polypeptide (SLC10A1) and bile salt export pump (ABCB 11)-coexpressing LLC-PK1 cells by cholestasis-inducing drugs
Authors: Mita S, Suzuki H, Akita H, Hayashi H, Onuki R, Hofmann AF, Sugiyama Y.
Journal: Drug Metab Dispos (2006): 1575
Oxidative stress induces internalization of the bile salt export pump, Bsep, and bile salt secretory failure in isolated rat hepatocyte couplets: a role for protein kinase C and prevention by protein kinase A
Authors: Perez LM, Milkiewicz P, Elias E, Coleman R, Sanchez Pozzi EJ, Roma MG.
Journal: Toxicol Sci (2006): 150
Radixin is required to maintain apical canalicular membrane structure and function in rat hepatocytes
Authors: Wang W, Soroka CJ, Mennone A, Rahner C, Harry K, Pypaert M, Boyer JL.
Journal: Gastroenterology (2006): 878
Small hepatocytes in culture develop polarized transporter expression and differentiation
Authors: Sidler Pf, undefined and ler MA, Hochli M, Inderbitzin D, Meier PJ, Stieger B.
Journal: J Cell Sci (2004): 4077
Vectorial transport of bile acids in immortalized mouse bile duct cells
Authors: Kida M, Mano Y, Ueno Y, Kobayashi K, Goto J, Ishii M, Shimosegawa T.
Journal: Hepatol Res (2003): 151
Cyclosporin A induced internalization of the bile salt export pump in isolated rat hepatocyte couplets
Authors: Roman ID, Fern and ez-Moreno MD, Fueyo JA, Roma MG, Coleman R.
Journal: Toxicol Sci (2003): 276
Taurolithocholic acid exerts cholestatic effects via phosphatidylinositol 3-kinase-dependent mechanisms in perfused rat livers and rat hepatocyte couplets
Authors: Beuers U, Denk GU, Soroka CJ, Wimmer R, Rust C, Paumgartner G, Boyer JL.
Journal: J Biol Chem (2003): 17810
Hepatoprotection with tauroursodeoxycholate and beta muricholate against taurolithocholate induced cholestasis: involvement of signal transduction pathways
Authors: Milkiewicz P, Roma MG, Elias E, Coleman R.
Journal: Gut (2002): 113
Visualization of the transport of primary and secondary bile acids across liver tissue in rats: in vivo study with fluorescent bile acids
Authors: Milkiewicz P, Mills CO, Hubscher SG, Cardenas R, Cardenas T, Williams A, Elias E.
Journal: J Hepatol (2001): 4
Use of a fluorescent bile acid to enhance visualization of the biliary tract and bile leaks during laparoscopic surgery in rabbits
Authors: Holzinger F, Krahenbuhl L, Schteingart CD, Ton-Nu HT, Hofmann AF.
Journal: Surg Endosc (2001): 209