Sibrafiban

Sibrafiban (RO 48-3657) is the orally active, nonpeptide, double-prodrug of Ro 44-3888 and a selective glycoprotein IIb/IIIa receptor antagonist. Sibrafiban inhibits platelet aggregation.

Product information

CAS Number: 172927-65-0

Molecular Weight: 420.46

Formula: C20H28N4O6

Synonym:

RO 48-3657

Chemical Name: ethyl 2-({1-[(2S)-2-({4-[(Z)-N'-hydroxycarbamimidoyl]phenyl}formamido)propanoyl]piperidin-4-yl}oxy)acetate

Smiles: C[C@H](NC(=O)C1C=CC(=CC=1)/C(/N)=N/O)C(=O)N1CCC(CC1)OCC(=O)OCC

InChiKey: WBNUCLPUOSXSNJ-ZDUSSCGKSA-N

InChi: InChI=1S/C20H28N4O6/c1-3-29-17(25)12-30-16-8-10-24(11-9-16)20(27)13(2)22-19(26)15-6-4-14(5-7-15)18(21)23-28/h4-7,13,16,28H,3,8-12H2,1-2H3,(H2,21,23)(H,22,26)/t13-/m0/s1

Technical Data

Appearance: Solid Power

Purity: ≥98% (or refer to the Certificate of Analysis)

Shipping Condition: Shipped under ambient temperature as non-hazardous chemical or refer to Certificate of Analysis

Storage Condition: Dry, dark and -20 ^oC for 1 year or refer to the Certificate of Analysis.

Shelf Life: ≥12 months if stored properly.

Stock Solution Storage: 0 - 4 ^oC for 1 month or refer to the Certificate of Analysis.

Drug Formulation: To be determined

HS Tariff Code: 382200

How to use

In Vitro:

The effects of site occupancy by Sibrafiban on platelet activation are assessed using P-selectin expression, fibrinogen binding and microaggregate formation. Sibrafiban inhibits ADP and TRAP-stimulated fibrinogen binding and microaggregate formation in a concentration-dependent manner, whereas P-selectin expression is relatively unaltered. A decrease in site occupancy from peak to trough of Sibrafiban does not result in increased activation of platelets.

In Vivo:

The effects of Ro 44-3888 on the platelet aggregation response to ADP (17 μmol) and on cutaneous bleeding times is determined in 8 rhesus monkeys given Sibrafiban 0.25 mg/kg/day or 0.5 mg/kg/day orally for 8 days. The maximum inhibition of ex vivo platelet aggregation and prolongation of bleeding time by Ro 44-3888 are dose dependent.

References:

1. M Dooley, et al. Sibrafiban. Drugs. 1999 Feb;57(2):225-30; discussion 231-2.
2. B Wittke, et al. Pharmacokinetics and pharmacodynamics of sibrafiban alone or in combination with ticlopidine and aspirin. Br J Clin Pharmacol. 2000 Mar;49(3):231-9.
3. Jeffrey T Billheimer, et al. Effects of glycoprotein IIb/IIIa antagonists on platelet activation: development of a transfer method to mimic peak to trough receptor occupancy. Thromb Res. 2002 Sep 15;107(6):303-17.

Products are for research use only. Not for human use.