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ethyl 4-hydroxy-1-(m-nitrophenyl)pyrazole-3-carboxylate is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

26502-54-5

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26502-54-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 26502-54-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,6,5,0 and 2 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 26502-54:
(7*2)+(6*6)+(5*5)+(4*0)+(3*2)+(2*5)+(1*4)=95
95 % 10 = 5
So 26502-54-5 is a valid CAS Registry Number.

26502-54-5Relevant academic research and scientific papers

SUBSTITUENT EFFECTS ON ACIDITIES AND TAUTOMERIC STRUCTURES OF 1-ARYL-3-ETHOXYCARBONYL-4-PYRAZOLONES AND THEIR 5-ARYLAZO DERVATIVES.

Shawali, Ahmad S.,Hassaneen, Hamdi M.,Hanna, Mokhtar A.

, p. 697 - 708 (2007/10/02)

Two series of 1-aryl-3-ethoxycarbonyl-4-hydroxy-pyrazoles (1) and 1-(m-chlorophenyl)-3-ethoxycarbonyl-4-hydroxy-5-arylazopyrazoles (2) have been prepared and their acidities determined spectrophotometrically at 25 deg C and ionic strength of 0.1 in 60 vol

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