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136409-34-2

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136409-34-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 136409-34-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,6,4,0 and 9 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 136409-34:
(8*1)+(7*3)+(6*6)+(5*4)+(4*0)+(3*9)+(2*3)+(1*4)=122
122 % 10 = 2
So 136409-34-2 is a valid CAS Registry Number.

136409-34-2Relevant articles and documents

Sequential copper-catalyzed vinylation/ cyclization: An efficient synthesis of functionalized oxazoles

Martin, Ruben,Cuenca, Ana,Buchwald, Stephen L.

, p. 5521 - 5524 (2008/09/17)

A modular and practical synthesis of highly substituted oxazoles has been developed. The transformation consists of a sequential copper-catalyzed amidation of vinyl halides followed by cyclization promoted by iodine. A wide variety of functionalized oxazo

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