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3-(4-Chloro-phenyl)-4-hydroxy-cyclobut-3-ene-1,2-dione is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

69009-26-3

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69009-26-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 69009-26-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,9,0,0 and 9 respectively; the second part has 2 digits, 2 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 69009-26:
(7*6)+(6*9)+(5*0)+(4*0)+(3*9)+(2*2)+(1*6)=133
133 % 10 = 3
So 69009-26-3 is a valid CAS Registry Number.

69009-26-3Relevant academic research and scientific papers

Oxocarbons and Related Compounds; Part 15. Meerwein-Arylation of Semisquaric Acid and Semisquaric Amides. A General Method for the Preparation of 3-Aryl-4-hydroxy- and 3-Amino-4-aryl-3-cyclobutene-1,2-diones.

Schmidt, Arthur H.,Schmitt, Guenter,Diedrich, Heike

, p. 579 - 582 (2007/10/02)

Meerwein-arylation of semisquaric acid (1) and semisquaric amides 4 has been found to afford general routes to 3-aryl-4-hydroxy-3-cyclobutene-1,2-diones 3 and 3-amino-4-aryl-3-cyclobutene-1,2-diones 5 respectively.

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