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299215-69-3

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299215-69-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 299215-69-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,9,9,2,1 and 5 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 299215-69:
(8*2)+(7*9)+(6*9)+(5*2)+(4*1)+(3*5)+(2*6)+(1*9)=183
183 % 10 = 3
So 299215-69-3 is a valid CAS Registry Number.

299215-69-3Relevant articles and documents

A Convenient Strategy for the Synthesis of 4,5-Bis(o-haloaryl)isoxazoles

Olivera, Roberto,SanMartin, Raul,Dominguez, Esther,Solans, Xabier,Urtiaga, Miren Karmele,Arriortua, Maria Isabel

, p. 6398 - 6411 (2007/10/03)

A series of new 1,2-bis(o-haloaryl)ethanones is efficiently prepared and applied to the synthesis of 4,5-bis(o-haloaryl)isoxazoles. Isolation of intermediate hydroxyisoxazolines, which are structurally examined, provides a definitive proof for a heterocyclization mechanism based on an amine exchange process. The isolation and X-ray crystallographic studies of significant side products such as benzamides and triarylpropionitriles are also described.

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