Filipin III
Item № 70440
CAS № 480-49-9
Purity ≥85%
product image
500 µg $89.00 $0.00
1 mg $124.00 $0.00
5 mg $496.00 $0.00

Pricing updated 2016-02-06. Prices are subject to change without notice.

Bulk Inquiry Form


Enter number, size, and select unit. Example: 2 x 500 mg

Please indicate any analytical testing requirements, special handling, packaging, or delivery requirements.


Cholesterol is both an important structural component of cell membranes and an early intermediate in hormone and bile acid biosynthesis. The localization and measurement of cholesterol in cells is therefore of great interest. Filipin is the collective name given to four isomeric polyene macrolides isolated from cultures of S. filipinensis; Filipin III is the predominant isomer and the one used in most studies. Filipin binds to cholesterol in membranes, forming ultrastructural aggregates and complexes which can be visualized by freeze-fracture electron microscopy.1,2 The binding of cholesterol also decreases the intrinsic fluorescence of Filipin, and this property has also been used to detect cholesterol in membrane fractions.3

Download Product Insert Download Safety Data Sheet (SDS)

Related Products

Show all 5 Hide all but first 3

View Related Product Categories
View Screening Libraries with Filipin III
Technical Information
Formal Name 4S,6S,8S,10R,12R,14R,16S,27S-octahydroxy-3R-(1R-hydroxy-hexyl)17,28R-dimethyl-oxacyclooctacosa-17E,19E,21E,21E,23E,25E-pentaen-2-one
CAS Number 480-49-9
Molecular Formula C35H58O11
Formula Weight 654.8
Purity ≥85%
Formulation A crystalline solid
λmax 323, 339, 357 nm
SMILES O[C@@H]1/C(C)=C/C=C/C=C/C=C/C=C/[C@H](O)[C@@H](C)OC([C@@]([C@H](O)CCCCC)([H])[C@@H](O)C[C@@H](O)C[C@@H](O)C[C@@H](O)C[C@@H](O)C[C@@H](O)C1)=O
InChI Code 1S/C35H58O11/c1-4-5-11-16-31(42)34-33(44)22-29(40)20-27(38)18-25(36)17-26(37)19-28(39)21-32(43)23(2)14-12-9-7-6-8-10-13-15-30(41)24(3)46-35(34)45/h6-10,12-15,24-34,36-44H,4-5,11,16-22H2,1-3H3/b7-6+,10-8+,12-9+,15-13+,23-14+/t24-,25+,26-,27+,28-

WARNING - This product is not for human or veterinary use.

Shipping & Storage
Storage -20°C
Shipping Room temperature in continental US; may vary elsewhere
Stability 1 year
Product Downloads & Resources
Product Downloads

Download Product Insert 85 Kb PDF

Download Safety Data Sheet (SDS) 27 Kb PDF

Download free InChI Key generation software

Additional Information

View the Cayman Structure Database for chemical structure definitions for many Cayman products

Get Batch-Specific Data and Documents by Batch Number

Separate multiple batch numbers with commas

QC Sheets
Certificates of Analysis
References & Background Reading
Product Description References

1. Castanho, M.A.R.B., Coutinho, A., and Prieto, M.J.E. Absorption and fluorescence spectra of polyene antibiotics in the presence of cholesterol. J Biol Chem 267 204-209 (1992).

2. Miller, R.G. Mini Review. The use and abuse of filipin to localize cholesterol in membranes. Cell Biol Int Rep 8(7) 519-535 (1984).

3. Severs, N.J., and Robenek, H. Detection of microdomains in biomembranes. An appraisal of recent developments in freeze-fracture cytochemistry. Biochim Biophys Acta 737 373-408 (1983).

Technical Support
Contact Us
  • To streamline the process attach the appropriate questionnaire to your inquiry.

  • Toll Free Phone (USA and Canada Only): (888) 526-5351
  • Direct Phone: (734) 975-3888
Contract Research Services

We offer you the deep and diverse knowledge of more than 100 in-house scientists and the expertise that comes from more than three decades of designing and developing the tools to advance biomedical research.

Cayman is know as a partner to scientists worldwide, responding to your needs with services in:

Cayman Chemical

1180 East Ellsworth Road

Ann Arbor, Michigan 48108 USA


Please wait...