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1234216-77-3

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1234216-77-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1234216-77-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,3,4,2,1 and 6 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1234216-77:
(9*1)+(8*2)+(7*3)+(6*4)+(5*2)+(4*1)+(3*6)+(2*7)+(1*7)=123
123 % 10 = 3
So 1234216-77-3 is a valid CAS Registry Number.

1234216-77-3Relevant articles and documents

Facile methods for the synthesis of 5-aryl and 5-iodo pyrrolo[2,3-d] pyrimidines

Venkata Rao,Raghu Prasad,Raghuram Rao

, p. E380-E383 (2014/11/07)

An efficient and environmentally benign one-pot method has been developed for the synthesis of 4-amino-5-arylpyrrolo[2,3-d]pyrimidines. Phthalimido acetophenones were reacted with cyanoacetamide to give 2-amino-4-phenyl-1H- pyrrole-3-carboxamides, which were further converted to 5-aryl-3H-pyrrolo[2,3-d] pyrimidin-4-ones. A novel method is also developed for the synthesis of 4-amino-5-iodopyrrolo[2,3-d]pyrimidines.

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