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Urea, N-(2-hydroxyphenyl)-N'-(4-nitrophenyl)-, also known as 4-nitrophenyl 2-hydroxyaniline or 4-NPA, is an organic compound with the chemical formula C13H11N3O3. It is a derivative of urea, featuring a 2-hydroxyphenyl group attached to one nitrogen atom and a 4-nitrophenyl group attached to the other nitrogen atom. Urea, N-(2-hydroxyphenyl)-N'-(4-nitrophenyl)- is often used as a substrate in enzymatic assays, particularly for the detection of esterase and protease enzymes, due to its ability to change color upon hydrolysis. The yellow-colored 4-NPA is converted into a colorless product when the enzyme breaks the ester bond, allowing for a visual indication of enzyme activity. It is also used in various chemical and biological research applications, such as in the study of enzyme kinetics and as a reagent in the synthesis of other compounds.

61601-12-5

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61601-12-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 61601-12-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,1,6,0 and 1 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 61601-12:
(7*6)+(6*1)+(5*6)+(4*0)+(3*1)+(2*1)+(1*2)=85
85 % 10 = 5
So 61601-12-5 is a valid CAS Registry Number.

61601-12-5SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 13, 2017

Revision Date: Aug 13, 2017

1.Identification

1.1 GHS Product identifier

Product name 1-(2-hydroxyphenyl)-3-(4-nitrophenyl)urea

1.2 Other means of identification

Product number -
Other names -

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:61601-12-5 SDS

61601-12-5Downstream Products

61601-12-5Relevant academic research and scientific papers

Process for the preparation of color images

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, (2008/06/13)

A photographic color coupler consisting of a phenolic compound having in the 2-position the radical STR1 wherein Y is an amide or a sulfonamide bridging radical and wherein R is aryl or alkyl.

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