R-138727

    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. R-138727 improves cerebral blood flow and reduces cerebral infarction and neurologic deficits in a non-human primate model of acute ischaemic stroke. R-138727 binds to and irreversibly inhibits the platelet P2Y12ADP receptor. R-138727 is composed of 4 stereo-isomers, (R, S)-, (R, R)-, (S, S)-, and (S, R)-isomers (the first letter for the configuration of a chiral center at the sulfur-bearing position and the second for that at the benzylic position). In vitro studies indicate that R- 138727 is an effective antagonist of P2Y12 and potent inhibitor of ADP-induced platelet aggregation, and that these antiplatelet activities of R-138727 are largely dependent on its (R, S)-isomer.


Chemical Structure

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R-138727
CAS# 204204-73-9

Theoretical Analysis

MedKoo Cat#: 532487
Name: R-138727
CAS#: 204204-73-9
Chemical Formula: C18H20FNO3S
Exact Mass: 349.11
Molecular Weight: 349.420
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 Key: ZWUQVNSJSJHFPS-XFXZXTDPSA-N

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-

SMILES Code: O=C(O)/C=C1CN(C(C2=CC=CC=C2F)C(C3CC3)=O)CCC/1S

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

More Info:

Biological target:
In vitro activity:
In vivo activity:

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
Formulation protocol:
In vitro protocol:
In vivo protocol:

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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;788:132-139. doi: 10.1016/j.ejphar.2016.06.023. Epub 2016 Jun 16. 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. 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. 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. 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. doi: 10.1160/TH05-03-0208. PMID: 16268477.