21448-11-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21448-11-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,4,4 and 8 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 21448-11:
(7*2)+(6*1)+(5*4)+(4*4)+(3*8)+(2*1)+(1*1)=83
83 % 10 = 3
So 21448-11-3 is a valid CAS Registry Number.
21448-11-3Relevant 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
