Catalog No. Size PriceQuantity
M13601-2 2mg solid $545
M13601-10 10mg solid $2,180


YM022 is a highly potent, selective and orally active gastrin/cholecystokinin (CCK)-B receptor (CCK-BR) antagonist. YM022 shows the Ki values of 68 pM and 63 nM for CCK-B and CCK-A receptor, respectively. YM022 can inhibit gastrin-induced gastric acid secretion and histidine decarboxylase activation in vivo.

Product information

CAS Number: 145084-28-2

Molecular Weight: 516.59

Formula: C32H28N4O3

Chemical Name: 3-(3-methylphenyl)-1-[(3R)-1-[2-(2-methylphenyl)-2-oxoethyl]-2-oxo-5-phenyl-2,3-dihydro-1H-1,4-benzodiazepin-3-yl]urea

Smiles: CC1=CC(=CC=C1)NC(=O)N[C@@H]1N=C(C2=CC=CC=C2N(CC(=O)C2=CC=CC=C2C)C1=O)C1C=CC=CC=1


InChi: InChI=1S/C32H28N4O3/c1-21-11-10-15-24(19-21)33-32(39)35-30-31(38)36(20-28(37)25-16-7-6-12-22(25)2)27-18-9-8-17-26(27)29(34-30)23-13-4-3-5-14-23/h3-19,30H,20H2,1-2H3,(H2,33,35,39)/t30-/m0/s1

Technical Data

Appearance: Solid Power

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

Solubility: DMSO : 100 mg/mL (193.58 mM; Need ultrasonic).

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:

YM022 inhibits binding to canine pancreas CCK-A receptor in a dose-dependent manner, with an IC50 value for [3H]devazepide binding of 136 nM. YM022 inhibits the binding of [125I]CCK-8 to canine cloned gastrin/CCK-B receptor in a dose-dependent manner, with an IC50 value for [125I]CCK-8 binding of 0.73 nM. Selectivity [ratio of (IC50 for gastrin/CCK-B receptor)/(IC50for CCK-A receptor)] of YM022 is 186.

In Vivo:

YM022 (intravenous injection; 0.01-1 μM/kg) dose-dependently inhibits pentagastrin- and peptone meal-induced acid secretion with ED50 values of 0.0261 and 0.0654 μmol/kg, respectively, without affecting histamine- or methacholine-induced acid secretion. YM022 (subcutaneous injection; 300 μmol/kg; single dose) lowers the oxyntic mucosal HDC activity and raises the serum gastrin concentration in a dose-dependent manner (measured 24 h after dosage). Maximum enzyme inhibition is achieved at a dose of 300 μmol/kg for YM022 and the inhibition of HDC lasts for 4 weeks. At sacrifice, drug residues can be seen at the injection site for as long as 4 (YM022) weeks after injection in rat. YM022 is suspended in 2% Methocel for oral ingestion and in PEG300 for subcutaneous injection.


  1. Nishida A, et al. Pharmacological profile of (R)-1-[2,3-dihydro-1-(2'-methylphenacyl)-2-oxo- 5-phenyl-1H-1,4-benzodiazepin-3-yl]-3-(3-methylphenyl)urea (YM022), a new potent and selective gastrin/cholecystokinin-B receptor antagonist, in vitro and in vivo.J Pharmacol Exp Ther. 1994 May;269(2):725-31.
  2. Kitano M, et al. Long-lasting cholecystokinin(2) receptor blockade after a single subcutaneous injection of YF476 or YM022.Br J Pharmacol. 2000 Jun;130(3):699-705.
  3. Beinborn M, et al. Small synthetic ligands of the cholecystokinin-B/gastrin receptor can mimic the function of endogenous peptide hormones.Yale J Biol Med. 1998 May-Aug;71(3-4):337-46.

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

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