430429-44-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 430429-44-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,3,0,4,2 and 9 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 430429-44:
(8*4)+(7*3)+(6*0)+(5*4)+(4*2)+(3*9)+(2*4)+(1*4)=120
120 % 10 = 0
So 430429-44-0 is a valid CAS Registry Number.
430429-44-0Relevant articles and documents
Parecoxib sodium substituted impurity and preparation method thereof
-
Paragraph 0161-0163;, (2020/06/05)
The invention relates to a parecoxib sodium substituted impurity and a preparation method thereof. The preparation method comprises the following steps: carrying out a reaction on a compound with a structure represented by a formula I with hydroxylamine h