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56239-07-7

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56239-07-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 56239-07-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,6,2,3 and 9 respectively; the second part has 2 digits, 0 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 56239-07:
(7*5)+(6*6)+(5*2)+(4*3)+(3*9)+(2*0)+(1*7)=127
127 % 10 = 7
So 56239-07-7 is a valid CAS Registry Number.

56239-07-7Downstream Products

56239-07-7Relevant articles and documents

Synthesis of Some New Pyrimidopyrimidines. Isolation of Stable Covalent Hydrated Pyrimidopyrimidines.

Pegiadou-Koemtjopoulou, S.

, p. 1063 - 1065 (2007/10/02)

4-amino-5-phenylpyrimidine 2 reacts with alkyl malonic acids 3 in acetic anhydride under reflux to give 2(4)H-pyrimidopyrimidines 4.From these reactions some covalent hydrated pyrimidopyrimidines 5 were also isolated, where the addition of the water molecule occured to the 6,7 C=N bond.This covalent hydration is irreversible.

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