Tanomastat is a matrix metalloproteinase inhibitor (MMPI).

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Tanomastat

Names
IUPAC name 4-(4'-Chlorobiphenyl-4-yl)-4-oxo-2-[(phenylsulfanyl)methyl]butanoic acid
Identifiers
CAS Number	179545-77-8 Y
3D model (JSmol)	Interactive image
Beilstein Reference	10706708
ChEMBL	ChEMBL83616 Y
ChemSpider	154422 Y
PubChem CID	177347
UNII	AM1ZX94EXH Y
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) Y Key: JXAGDPXECXQWBC-UHFFFAOYSA-N Y 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) 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) Key: JXAGDPXECXQWBC-UHFFFAOYSA-N
SMILES Clc3ccc(c2ccc(C(=O)CC(C(=O)O)CSc1ccccc1)cc2)cc3
Properties
Chemical formula	C23H19ClO3S
Molar mass	410.91 g·mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Y verify (what is YN ?) Infobox references

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Excision of malignant tumors comprises first line treatment for cancer of solid tissues. This procedure not infrequently misses small fragments of the tumor that may have broken off before surgery from the principal site of the disease. These fragments, metastases, often proliferate at quite remote locations where they cause much of the pathology of cancer. A series of proteolytic enzymes present in tumor cells, known as matrix metalloproteinases, help establish growth of these metastases at the newly invaded sites; these proteases are also involved in the formation of new blood vessels that will nourish the invasive cell masses. Consequently, considerable research has been devoted to matrix metalloproteinases as a target for anticancer drugs. Clinical results with these compounds have to date produced equivocal results.^[1]

• Batimastat
• Marimastat