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

MedKoo CAT#: 532994

CAS#: 916482-17-2

Description: YS121 is a dual inhibitor of microsomal prostaglandin E2 synthase-1 and 5-lipoxygenase.

Chemical Structure

CAS# 916482-17-2

Theoretical Analysis

MedKoo Cat#: 532994
Name: YS121
CAS#: 916482-17-2
Chemical Formula: C20H26ClN3O2S
Exact Mass: 407.1434
Molecular Weight: 407.96
Elemental Analysis: C, 58.88; H, 6.42; Cl, 8.69; N, 10.30; O, 7.84; S, 7.86

Price and Availability

Size Price Availability Quantity
5.0mg USD 325.0 2 Weeks
10.0mg USD 590.0 2 Weeks
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Synonym: YS121; YS 121; YS-121

IUPAC/Chemical Name: 2-({4-chloro-6-[(2,3-dimethylphenyl)amino]pyrimidin-2-yl}sulfanyl)octanoic acid


InChi Code: InChI=1S/C20H26ClN3O2S/c1-4-5-6-7-11-16(19(25)26)27-20-23-17(21)12-18(24-20)22-15-10-8-9-13(2)14(15)3/h8-10,12,16H,4-7,11H2,1-3H3,(H,25,26)(H,22,23,24)


Appearance: Liquid

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 407.96 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: Koeberle A, Rossi A, Zettl H, Pergola C, Dehm F, Bauer J, Greiner C, Reckel S, Hoernig C, Northoff H, Bernhard F, Dötsch V, Sautebin L, Schubert-Zsilavecz M, Werz O. The molecular pharmacology and in vivo activity of 2-(4-chloro-6-(2,3-dimethylphenylamino)pyrimidin-2-ylthio)octanoic acid (YS121), a dual inhibitor of microsomal prostaglandin E2 synthase-1 and 5-lipoxygenase. J Pharmacol Exp Ther. 2010 Mar;332(3):840-8. doi: 10.1124/jpet.109.160663. Epub 2009 Nov 24. PubMed PMID: 19934399.


5.0mg / USD 325.0