Catalog No. Size PriceQuantity
M13554-2 Contact sales@xcessbio.com for quotation $100
M13554-10 Contact sales@xcessbio.com for quotation $100


Tanomastat (BAY 12-9566) is an orally bioavailable, non-peptidic biphenyl matrix metalloproteinases (MMPs) inhibitor with a Zn-binding carboxyl group. The Ki values are 11, 143, 301, and 1470 nM for MMP-2, MMP-3, MMP-9, MMP-13 respectively. Tanomastat shows anti-invasive and antimetastatic activity in several experimental tumor models.

Product information

CAS Number: 179545-77-8

Molecular Weight: 410.91

Formula: C23H19ClO3S


BAY 12-9566

Chemical Name: (2S)-4-{4'-chloro-[1,1'-biphenyl]-4-yl}-4-oxo-2-[(phenylsulfanyl)methyl]butanoic acid

Smiles: OC(=O)[C@H](CC(=O)C1C=CC(=CC=1)C1C=CC(Cl)=CC=1)CSC1C=CC=CC=1


InChi: InChI=1S/C23H19ClO3S/c24-20-12-10-17(11-13-20)16-6-8-18(9-7-16)22(25)14-19(23(26)27)15-28-21-4-2-1-3-5-21/h1-13,19H,14-15H2,(H,26,27)/t19-/m1/s1

Technical Data

Appearance: Solid Power

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

Solubility: Soluble in DMSO

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:

Tanomastat (BAY 12-9566) (1-10000 nM; 6 hours) prevents matrix invasion by endothelial cells in a concentration-dependent manner (IC50=840 nM), without affecting cell proliferation. Tanomastat (BAY 12-9566) (1-00 µM; 5 days) inhibits tubule formation completely at 15-100 µM.

In Vivo:

Tanomastat (BAY 12-9566) (100 mg/kg; p.o.; daily for a 7-week period) inhibits local tumor regrowth without causing any toxic effect, and inhibits the number and volume of lung metastases.


  1. Leung D, et al. Protease inhibitors: current status and future prospects. J Med Chem. 2000 Feb 10;43(3):305-41.
  2. Gatto C, et al. BAY 12-9566, a novel inhibitor of matrix metalloproteinases with antiangiogenic activity. Clin Cancer Res. 1999 Nov;5(11):3603-7.
  3. Nozaki S, et al. Activity of biphenyl matrix metalloproteinase inhibitor BAY 12-9566 in a human breast cancerorthotopic model. Clin Exp Metastasis. 2003;20(5):407-12.

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

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