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59021-49-7

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59021-49-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 59021-49-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,9,0,2 and 1 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 59021-49:
(7*5)+(6*9)+(5*0)+(4*2)+(3*1)+(2*4)+(1*9)=117
117 % 10 = 7
So 59021-49-7 is a valid CAS Registry Number.

59021-49-7Downstream Products

59021-49-7Relevant articles and documents

Synthesis of pyrrole, pyridinone and pyrimidinone derivatives using PTC conditions

Abdel-Ghany,El-Sayed,El-Shafei

, p. 1119 - 1131 (2007/10/02)

The reaction of anilinomethylenemalononitrile 1 or 1,4-di(malononitrilemethyleneamino)benzene 7 with some reactive halo compounds in a one-pot reaction under PTC conditions affords a new series of pyrrole and pyridinone compounds. The reaction of compounds 1 or 7 with ethyl chloroformate gives the corresponding esters which underwent cyclization on reaction with different amino compounds affording the pyrimidinone derivatives.

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