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616387

Sigma-Aldrich

Nα-Tosyl-Phe Chloromethyl Ketone

Irreversible inhibitor of chymotrypsin.

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Synonym(s):
Nα-Tosyl-Phe Chloromethyl Ketone, TPCK
Empirical Formula (Hill Notation):
C17H18ClNO3S
CAS Number:
402-71-1
Molecular Weight:
351.85
MDL number:
MFCD00000935
UNSPSC Code:
12352200
NACRES:
NA.77

Quality Level

100

Assay

≥98% (TLC)

form

solid

manufacturer/tradename

Calbiochem®

storage condition

OK to freeze

color

white

solubility

ethanol: 5 mg/mL
methanol: 5 mg/mL

shipped in

ambient

storage temp.

2-8°C

InChI

1S/C17H18ClNO3S/c1-13-7-9-15(10-8-13)23(21,22)19-16(17(20)12-18)11-14-5-3-2-4-6-14/h2-10,16,19H,11-12H2,1H3/t16-/m0/s1

InChI key

MQUQNUAYKLCRME-INIZCTEOSA-N

General description

Irreversible inhibitor of chymotrypsin. Useful for inhibiting chymotrypsin activity in trypsin preparations. Inhibits apoptosis in thymocytes. Blocks the induction of nitric oxide synthase by γ-interferon and lipopolysaccharide (EC50 = 20 µM). Suggested working concentration is 10-100 µM.
This product has been discontinued.


Irreversible inhibitor of chymotrypsin. Useful for inhibiting chymotrypsin activity in trypsin preparations. Inhibits apoptosis in thymocytes. Blocks the induction of nitric oxide synthase by γ-interferon and lipopolysaccharides (EC50 = 20 M).

Biochem/physiol Actions

Cell permeable: no
EC50 = 20 µM in blocking the induction of nitric oxide synthase by γ-interferon and lipopolysaccharides.
Primary Target
chymotrypsin activity in preparations
Product does not compete with ATP.
Reversible: no

Warning

Toxicity: Irritant (B)

Reconstitution

Following reconstitution, store in the refrigerator (4°C). Stock solutions are stable for up to 4 months at 4°C.

Other Notes

Fearnhead, H.O., et al. 1995. FEBS Lett. 357, 242.
Griscavage, J.M., et al. 1995. Biochem. Biophys. Res. Commun.215, 721.
Weaver, V.M., et al. 1993. Biochem. Cell Biol.71, 488.
Murakami, T., et al. 1991. Biochim. Biophys. Acta1079, 279.
Nierodzik, M.L., et al. 1991. J. Clin. Invest.87, 229.
Wilson, W.E., et al. 1989. J. Biol. Chem. 264, 17777.

Legal Information

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany

Pictograms

CorrosionExclamation mark
GHS05,GHS07

Signal Word

Danger

Hazard Statements

H315,H318,H335

Hazard Classifications

Eye Dam. 1 - Skin Irrit. 2 - STOT SE 3

Target Organs

Respiratory system

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

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’.

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