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6584-20-9

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6584-20-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 6584-20-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,5,8 and 4 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 6584-20:
(6*6)+(5*5)+(4*8)+(3*4)+(2*2)+(1*0)=109
109 % 10 = 9
So 6584-20-9 is a valid CAS Registry Number.

6584-20-9Relevant articles and documents

Condensed heteroaromatic ring systems. XXI. Synthesis of pyrrolo[2,3-d]pyrimidines and pyrrolo[3,2-d]pyrimidines

Sakamoto,Satoh,Kondo,Yamanaka

, p. 81 - 86 (2007/10/02)

Pyrrolo[2,3-d]pyrimidines and pyrrolo[3,2-d]pyrimidines were synthesized in high yields by the palladium-catalyzed reaction of 4-acetylamino-5-bromopyrimidines and 5-acetylamino-4-iodopyrimidines with (Z)-1-ethoxy-2-(tributylstannyl)ethene followed by cyclization under acidic conditions.

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