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Y0503 Sigma-Aldrich

Y-27632 dihydrochloride

≥98% (HPLC)

Synonym: (R)-(+)-trans-4-(1-Aminoethyl)-N-(4-Pyridyl)cyclohexanecarboxamide dihydrochloride

  • CAS Number 129830-38-2

  • Empirical Formula (Hill Notation) C14H21N3O · 2HCl

  • Molecular Weight 320.26

  •  MDL number MFCD03490488

  •  PubChem Substance ID 24277699

  •  NACRES NA.77



Related Categories Bioactive Small Molecule Alphabetical Index, Bioactive Small Molecules, Biochemicals and Reagents, Cell Biology, Cell Signaling and Neuroscience,
Quality Level   100
biological source   synthetic (organic)
assay   ≥98% (HPLC)
form   powder
optical activity   [α]/D +3.5 to +5.0°, c = 0.5 in methanol
color   white to beige
solubility   H2O: 14 mg/mL
storage temp.   2-8°C
SMILES string   Cl.Cl.C[C@@H](N)[C@H]1CC[C@@H](CC1)C(=O)Nc2ccncc2
InChI   1S/C14H21N3O.2ClH/c1-10(15)11-2-4-12(5-3-11)14(18)17-13-6-8-16-9-7-13;;/h6-12H,2-5,15H2,1H3,(H,16,17,18);2*1H/t10-,11-,12-;;/m1../s1
Gene Information   human ... ROCK1(6093), ROCK2(9475)


General description

Y-27632 dihydrochloride is an effective bronchodilator and improves lung resistance (RL) induced by antigen and acetylcholine. Y-27632 controls neutrophil migration and lung edema and may be a potential drug for treating acute lung injury.


Y-27632 dihydrochloride has been used:
• as a medium supplement in pancreatic ductal adenocarcinoma organoid culture
• in the inhibition of Ras homolog gene family (Rho) kinase in mouse embryonic stem cells
• in the inhibition of Rho-associated protein kinase (ROCK) in human embryonic stem cells and human induced pluripotent stem cells (iPSCs)


1, 5 mg in glass bottle

Biochem/physiol Actions

Y-27632 is highly potent, cell-permeable, selective ROCK (Rho-associated coiled coil forming protein serine/threonine kinase) inhibitor. Ki = 140 nM for p160ROCK. Y-27632 also inhibits ROCK-II with equal potency. The inhibition is competitive with respect to ATP.

Features and Benefits

This compound is a featured product for Kinase Phosphatase Biology research. Click here to discover more featured Kinase Phosphatase Biology products. Learn more about bioactive small molecules for other areas of research at sigma.com/discover-bsm.

This compound is also offered as part of Sigma′s Library of Pharmacologically Active Compounds (LOPAC®1280), a biologically annotated collection of high-quality, ready-to-screen compounds. Click here to learn more.

Legal Information

Sold under license from Mitsubishi Pharma Corporation

LOPAC is a registered trademark of Sigma-Aldrich Co. LLC

Safety & Documentation

Safety Information

Personal Protective Equipment 
NONH for all modes of transport
WGK Germany 
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable


Certificate of Analysis (COA)

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Certificate of Origin (COO)

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Protocols & Articles


3D Organoid Culture: New In Vitro Models of Development and Disease

Model systems drive biological research by recapitulating body processes and functions from the molecular to whole organism level. The human body is composed of both cellular and non-cellular materia...
Keywords: Adhesion, Cancer, Cell attachment, Cell culture, Cryopreservation, Diseases, Growth factors, Infectious Diseases, Processes and Functions, Vitamins

Discover Bioactive Small Molecules for Kinase Phosphatase Biology

Phosphorylation is a ubiquitous cellular regulatory mechanism that mediates signal transduction pathways, which carry signals from the cell surface to the nucleus or cytoplasm, by altering the activi...
Keywords: Apoptosis, Bioactive small molecules, Cancer, Diseases, Inflammation, Metabolism, Neurodegenerative Diseases, Phosphorylations, Transduction

Naive Pluripotent Stem Cell Culture in an Inhibitor Based 2i/LIF Containing Serum-Free and Feeder-Free Stem Cell Media

Naive pluripotent stem cells are located within the epiblast of mature blastocysts. These primitive “ground-state” cells may be cultured in vitro using specialized media and small molecule inhibitors...
Gabi Tremml, Ming Li and Vi Chu1*,
1MilliporeSigma, Bioscience Division, Temecula, CA, USA
Keywords: Cell culture, Gene expression, Immunocytochemistry, Microscopy, Polymerase chain reaction, Polymerase chain reaction - quantitative, Transcription

Peer-Reviewed Papers


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