Merck
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91C

Sigma-Aldrich

Naphthol AS-D Chloroacetate (Specific Esterase) Kit

Synonym(s):
Leder Stain

description

Kit formulated with all liquid reagents

Quality Level

shelf life

Expiry date on the label.

IVD

for in vitro diagnostic use

application(s)

hematology
histology

shipped in

wet ice

storage temp.

2-8°C

Application

Esterases are ubiquitous in nature and encompass a series of different enzymes acting upon select substrates. With the 91C kit, Naphthol AS-D Chloroacetate is enzymatically hydrolyzed by "specific esterase, " liberating a free naphthol compound. This then couples with a diazonium compound, forming highly colored deposits at sites of enzyme activity. This enzyme is usually considered specific for cells of granulocytic lineage. May be used to detect neutrophils in peripheral blood, bone marrow or tissue sections which have been paraffin embedded.

Kit Components Also Available Separately

Product No.
Description
SDS

  • 915Citrate Solution, pH 3.6±0.1 (25 °C), 27 mM 50 mL

  • 912Fast Red Violet LB Base solution 10 mL

  • 911Naphthol AS-D Chloroacetate solution 10 mL

  • 911Naphthol AS-D Chloroacetate solution 50 mL

Signal Word

Danger

Hazard Classifications

Acute Tox. 4 Oral - Eye Dam. 1 - Met. Corr. 1 - Repr. 1B - Skin Irrit. 2 - Skin Sens. 1 - STOT RE 2 Oral - STOT SE 3

Target Organs

Kidney, Respiratory system

Supplementary Hazards

Storage Class Code

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

WGK

WGK 2


Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

EU REACH Annex XIV (Authorisation List)

Certificate of Analysis

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Certificate of Origin

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