Cat. No. 4210

Ascomycin C43H69NO12 [104987-12-4]

Price and Availability

For Ascomycin pricing & availability please select your country from the drop down menu:
By clicking submit you agree to accept a cookie from Tocris Bioscience. For details, please read our privacy and cookie policy.

Alternative Names: FK 520, FR 900520

Chemical Name: (3S,4R,5S,8R,9E,12S,14S,15R,16S,18R,19R,26aS)-8-Ethyl-5,6,8,11,12,13,14,15,16,17,18,19,24,25,26,26a-hexadecahydro-5,19-dihydroxy-3-[(1E)-2-[(1R,3R,4R)-4-hydroxy-3-methoxycyclohexyl]-1-methylethenyl]-14,16-dimethoxy-4,10,12,18-tetramethyl-15,19-epoxy-3H-pyrido[2,1-c][1,4]oxaazacyclotricosine-1,7,20,21(4H,23H)tetrone

Biological Activity

Analog of FK 506 (Cat. No. 3631); binds to FK 506-binding protein 12 (FKBP12) in order to inhibit calcineurin phosphatase activity (IC50 = 49 nM) and activation of nuclear factor of activated T cells (NFAT). Displays antifungal and immunosuppressive activities.

Technical Data

Soluble to 50 mM in DMSO and to 50 mM in ethanol
Store at -20°C

The technical data provided above is for guidance only. For batch specific data refer to the Certificate of Analysis.
All Tocris products are intended for laboratory research use only.

Certificate of Analysis / Safety Data Sheet

Certificate of Analysis: View current batch
Safety Data Sheet: View Safety Data Sheet

Revill et al (2002) Genetically engineered analogs of ascomycin for nerve regeneration. J.Pharmacol.Exp.Ther. 302 1278. PMID: 12183690.

Arndt et al (1999) Secretion of FK506/FK520 and rapamycin by Streptomyces inhibits the growth of competing Saccharomyces cerevisiae and Cryptococcus neoformans. Microbiology 145 1989. PMID: 10463165.

Motamedi et al (1996) Characterization of methyltransferase and hydroxylase genes involved in the biosynthesis of the immunosuppressants FK506 and FK520. J.Bacteriol. 178 5243. PMID: 8752344.

Hatanaka et al (1988) FR-900520 and FR-900523, novel immunosuppressants isolated from a Streptomyces. II. Fermentation, isolation and physicochemical and biological characteristics. J.Antibiot (Tokyo). 41 1593.

If you know of a relevant reference for this product please let us know.

Citations are publications that use Tocris products.

Do you know of a great paper that uses Ascomycin from Tocris? If so please let us know.

View Related Products by Product Action

Keywords: Ascomycin, supplier, FK520, FR900520, Ascomycin, calcineurin, phosphatase, inhibitors, inhibits, analogs, FK, 506, fkbp12, immunosuppressives, antifungals, antibiotics, Tocris Bioscience, Protein Ser/Thr Phosphatases Inhibitor products

Quick Order

Find multiple products by catalog number

divider line

Cancer Research Product Guide

Cancer Research Product Guide

Our Cancer Research Guide highlights over 750 products for cancer research. Request copy or view PDF today.

divider line

LinkedIn Updates

Follow Tocris on LinkedIn

Follow us on LinkedIn!

Visit our LinkedIn page for the latest Tocris news, events and updates.