CAS No. 221877-54-9

Batch: Purity:97
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Zotarolimus (ABT-578) Chemical Structure
Chemical Structure
Check the Zotarolimus (ABT-578) product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

IUPAC Name (1R,9S,12S,15R,16E,18R,19R,21R,23S,24E,26E,28E,30S,32S,35R)-1,18-dihydroxy-19,30-dimethoxy-12-[(2R)-1-[(1S,3R,4S)-3-methoxy-4-(tetrazol-1-yl)cyclohexyl]propan-2-yl]-15,17,21,23,29,35-hexamethyl-11,36-dioxa-4-azatricyclo[30.3.1.04,9]hexatriaconta-16,24,26,28-tetraene-2,3,10,14,20-pentone
CAS Number 221877-54-9
Molecular Formula

C52H79N5O12
Molecular Weight (MW) 966.21
SMILES CC1CCC2CC(C(=CC=CC=CC(CC(C(=O)C(C(C(=CC(C(=O)CC(OC(=O)C3CCCCN3C(=O)C(=O)C1(O2)O)C(C)CC4CCC(C(C4)OC)N5C=NN=N5)C)C)O)OC)C)C)C)OC
InChIKey CGTADGCBEXYWNE-JUKNQOCSSA-N

Ordering Information

Biological Activity

Zotarolimus (ABT-578) is a rapamycin analogue that inhibits FKBP-12 binding with an IC50 of. By binding to FKBP-12, it targets the mTOR signaling pathway, leading to the inhibition of cell cycle progression and cell proliferation. Zotarolimus effectively suppresses vascular smooth muscle cell proliferation and migration, acting as an antiproliferative agent to prevent neointimal hyperplasia.

How to Prepare Stock Solution?

Concentration Volume Mass
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Solubility

Batch:
All in vitro solubility values are batch-tested experimental data (non-literature values).
Solvent Solubility & Note
DMSO 100 mg/mL (103.49 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.)
Ethanol 100 mg/mL
Water Insoluble
FAQ
Q: Why does a DMSO stock precipitate in media/saline?
A: It is caused by unheated aqueous media (supersaturation), local solvent shock, or incorrect mixing sequence.
How to fix it?
  • Preheat media/saline to 37°C.
  • Mix rapidly (pipette/vortex) upon addition.
  • For complex mixes, always add the aqueous phase last.
  • Re-dissolve minor precipitates with a 37°C water bath and sonication (≤30 min).

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Note: Technical data last updated: Sep 1, 2026.