WARNING: This product is for research use only, not for human or veterinary use.

MedKoo CAT#: 532487

CAS#: 204204-73-9

Description: R-138727, or Prasugrel active metabolite, is a novel P2Y12 receptor inhibitor.

Chemical Structure

CAS# 204204-73-9

Theoretical Analysis

MedKoo Cat#: 532487
Name: R-138727
CAS#: 204204-73-9
Chemical Formula: C18H20FNO3S
Exact Mass: 349.1148
Molecular Weight: 349.42
Elemental Analysis: C, 61.87; H, 5.77; F, 5.44; N, 4.01; O, 13.74; S, 9.18

Price and Availability

This product is not in stock, which may be available by custom synthesis. For cost-effective reason, minimum order is 1g (price is usually high, lead time is 2~3 months, depending on the technical challenge). Quote less than 1g will not be provided. To request quote, please email to sales @medkoo.com or click below button.
Note: Price will be listed if it is available in the future.

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Synonym: R-138727; R 138727; R138727; Prasugrel active metabolite.

IUPAC/Chemical Name: (2Z)-2-[1-[2-cyclopropyl-1-(2-fluorophenyl)-2-oxoethyl]-4-sulfanylpiperidin-3-ylidene]acetic acid


InChi Code: InChI=1S/C18H20FNO3S/c19-14-4-2-1-3-13(14)17(18(23)11-5-6-11)20-8-7-15(24)12(10-20)9-16(21)22/h1-4,9,11,15,17,24H,5-8,10H2,(H,21,22)/b12-9-


Appearance: Solid powder

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

Shipping Condition: Shipped under ambient temperature as non-hazardous chemical. This product is stable enough for a few weeks during ordinary shipping and time spent in Customs.

Storage Condition: Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).

Solubility: Soluble in DMSO

Shelf Life: >2 years if stored properly

Drug Formulation: This drug may be formulated in DMSO

Stock Solution Storage: 0 - 4 C for short term (days to weeks), or -20 C for long term (months).

HS Tariff Code: 2934.99.9001

Preparing Stock Solutions

The following data is based on the product molecular weight 349.42 Batch specific molecular weights may vary from batch to batch due to the degree of hydration, which will affect the solvent volumes required to prepare stock solutions.

Recalculate based on batch purity %
Concentration / Solvent Volume / Mass 1 mg 5 mg 10 mg
1 mM 1.15 mL 5.76 mL 11.51 mL
5 mM 0.23 mL 1.15 mL 2.3 mL
10 mM 0.12 mL 0.58 mL 1.15 mL
50 mM 0.02 mL 0.12 mL 0.23 mL

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1: Sugidachi A, Mizuno M, Ohno K, Jakubowski JA, Tomizawa A. The active metabolite of prasugrel, R-138727, improves cerebral blood flow and reduces cerebral infarction and neurologic deficits in a non-human primate model of acute ischaemic stroke. Eur J Pharmacol. 2016 Oct 5;788:132-9. doi: 10.1016/j.ejphar.2016.06.023. Epub 2016 Jun 16. PubMed PMID: 27318323.

2: Kakarla S, Datla PV, Kodali G, Seru G. Analysis of prasugrel active metabolite R-138727 in human plasma: a sensitive, highly selective and fast LC-MS/MS method. J Chromatogr B Analyt Technol Biomed Life Sci. 2016 May 1;1020:103-10. doi: 10.1016/j.jchromb.2016.03.035. Epub 2016 Mar 24. PubMed PMID: 27038402.

3: Lukram O, Zarapkar M, Kumar Jha C, Parmar S, Tomar KS, Hande A. Electrospray ionization LC-MS/MS validated method for the determination of the active metabolite (R-138727) of prasugrel in human plasma and its application to a bioequivalence study. Drug Test Anal. 2012 Feb;4(2):158-66. doi: 10.1002/dta.264. Epub 2011 Mar 25. PubMed PMID: 21438161.

4: Algaier I, Jakubowski JA, Asai F, von Kügelgen I. Interaction of the active metabolite of prasugrel, R-138727, with cysteine 97 and cysteine 175 of the human P2Y12 receptor. J Thromb Haemost. 2008 Nov;6(11):1908-14. doi: 10.1111/j.1538-7836.2008.03136.x. Epub 2008 Aug 22. PubMed PMID: 18752581.

5: Hasegawa M, Sugidachi A, Ogawa T, Isobe T, Jakubowski JA, Asai F. Stereoselective inhibition of human platelet aggregation by R-138727, the active metabolite of CS-747 (prasugrel, LY640315), a novel P2Y12 receptor inhibitor. Thromb Haemost. 2005 Sep;94(3):593-8. PubMed PMID: 16268477.