6731-45-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 6731-45-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,7,3 and 1 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 6731-45:
(6*6)+(5*7)+(4*3)+(3*1)+(2*4)+(1*5)=99
99 % 10 = 9
So 6731-45-9 is a valid CAS Registry Number.
6731-45-9Relevant academic research and scientific papers
Solvent-free preparation method of di-substituted malononitrile derivative
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Paragraph 0045; 0048-0050, (2019/05/11)
The invention relates to a solvent-free preparation method of a di-substituted malononitrile derivative. The solvent-free preparation method comprises: 1, adding malononitrile, aromatic aldehyde and dihydropyridine ester to a reaction test tube according
