14062-20-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 14062-20-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,4,0,6 and 2 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 14062-20:
(7*1)+(6*4)+(5*0)+(4*6)+(3*2)+(2*2)+(1*0)=65
65 % 10 = 5
So 14062-20-5 is a valid CAS Registry Number.
14062-20-5Relevant articles and documents
Preparation method of ibuprofen impurity N
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Paragraph 0007; 0024, (2021/03/30)
The invention provides a preparation method of an ibuprofen impurity N, and belongs to the technical field of preparation of drug impurity standard substances, and the preparation method comprises thefollowing steps: step 1, carrying out coupling reaction