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50982-55-3

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50982-55-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 50982-55-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,0,9,8 and 2 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 50982-55:
(7*5)+(6*0)+(5*9)+(4*8)+(3*2)+(2*5)+(1*5)=133
133 % 10 = 3
So 50982-55-3 is a valid CAS Registry Number.

50982-55-3Downstream Products

50982-55-3Relevant articles and documents

A New Synthetic Pathway to Symmetric Bisubstituted Naphthoquinones

Migulin, Vasily A.

, p. 60 - 68 (2019/12/26)

straightforward and practical synthesis of 2,3-diiodo-1,4-naphthoquinone is reported. Based on the prepared diiodide, a new synthetic approach to symmetric bisubstituted 1,4-naphthoquinones via double Suzuki-Miyaura reaction at room temperature has been researched and developed. The presented general method combines broad-spectrum applicability, efficiency, and simplicity providing target materials in good to quantitative yields.

Palladium-Catalysed Cross Coupling of Arylboronic Acids with 2-Chloro-1,4-naphthoquinones: The Synthesis of 2-Aryl- and 2,3-Bisaryl-1,4-naphthoquinones

Best, Wayne M.,Sims, Colette G.,Winslade, Merilyn

, p. 401 - 404 (2007/10/03)

2-Chloro-1,4-naphthoquinones underwent palladium-catalysed cross coupling reactions with arylboronic acids to give the corresponding 2-aryl-1,4-naphthoquinones. Similarly, 2,3-dichloro-1,4-naphthoquinone underwent efficient cross coupling reactions with arylboronic acids to give mono or bis adducts. The required 2-chloro-1,4-naphthoquinones were conveniently prepared from the corresponding 2-hydroxy-1,4-naphthoquinones by treatment with oxalyl chloride.

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