Skip to Content
Merck
All Photos(3)

Documents

D7910

Sigma-Aldrich

3,4-Dichloroisocoumarin

serine protease inhibitor

Synonym(s):

3,4-DCI, 3,4-Dichloro-2-benzopyran-1-one

Sign Into View Organizational & Contract Pricing
All Photos(3)

About This Item

Empirical Formula (Hill Notation):
C9H4Cl2O2
CAS Number:
51050-59-0
Molecular Weight:
215.03
Beilstein:
6802625
MDL number:
MFCD00036960
UNSPSC Code:
12352202
PubChem Substance ID:
24278386
NACRES:
NA.77

Quality Level

200

Assay

≥98% (TLC)

form

powder

solubility

ethyl acetate: 49.00-51.00 mg/mL, clear, colorless to faintly yellow

storage temp.

2-8°C

SMILES string

ClC1=C(Cl)c2ccccc2C(=O)O1

InChI

1S/C9H4Cl2O2/c10-7-5-3-1-2-4-6(5)9(12)13-8(7)11/h1-4H

InChI key

SUGXUUGGLDCZKB-UHFFFAOYSA-N

Looking for similar products? Visit Product Comparison Guide

Application

Useful in a rapid staining method for identification of macrophages; counts by this method were confirmed by the more complex morphological criteria, by phagocytosis, and by the presence of Fc receptors.

Other Notes

Effective concentration 5-100 μM.

Quantity

Half-life = 20 min at pH 7.5.

Substrates

Serine protease inhibitor. Active towards a wide range of serine proteases including granzymes. Not active toward β-lactamases.

Pictograms

Skull and crossbones
GHS06

Signal Word

Danger

Hazard Statements

H301,H315,H319,H335

Hazard Classifications

Acute Tox. 3 Oral - Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Anežka Tichá et al.
Cell chemical biology, 24(12), 1523-1536 (2017-11-07)
Rhomboid-family intramembrane proteases regulate important biological processes and have been associated with malaria, cancer, and Parkinson's disease. However, due to the lack of potent, selective, and pharmacologically compliant inhibitors, the wide therapeutic potential of rhomboids is currently untapped. Here, we
Premkumari Kumarathasan et al.
Particle and fibre toxicology, 15(1), 34-34 (2018-08-12)
There is a paucity of mechanistic information that is central to the understanding of the adverse health effects of source emission exposures. To identify source emission-related effects, blood and saliva samples from healthy volunteers who spent five days near a
Diego López León et al.
iScience, 23(3), 100932-100932 (2020-03-11)
Pathogenic bacteria secrete virulence factors that interact with the human host to establish infections. The human immune system evolved multiple mechanisms to fight bacterial invaders, including immune proteases that were demonstrated to contribute crucially to antibacterial defense. Here we show
V Conseil et al.
Antimicrobial agents and chemotherapy, 43(6), 1358-1361 (1999-05-29)
We investigated the effect of protease inhibitors on the asexual development of the protozoan parasite Toxoplasma gondii. Among the inhibitors tested only two irreversible serine protease inhibitors, 3,4-dichloroisocoumarin and 4-(2-aminoethyl)-benzenesulfonyl fluoride, clearly prevented invasion of the host cells by specifically
A Weihofen et al.
The Journal of biological chemistry, 275(40), 30951-30956 (2000-08-02)
Signal peptides of secretory and membrane proteins are generated by proteolytic processing of precursor proteins after insertion into the endoplasmic reticulum membrane. Liberated signal peptides can be further processed, and the resulting N-terminal fragments are released toward the cytosol, where
View All Related Papers

Articles

Elastase Function and Importance

Elastase application index for understanding leukocyte elastase, a 29KDa serine endoprotease.

Papain, Cysteine Protease, Properties & Products

Uncover properties and applications of the cysteine protease papain and find inhibitors, substrates, and other papain products.

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service