204641-55-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 204641-55-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,4,6,4 and 1 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 204641-55:
(8*2)+(7*0)+(6*4)+(5*6)+(4*4)+(3*1)+(2*5)+(1*5)=104
104 % 10 = 4
So 204641-55-4 is a valid CAS Registry Number.
204641-55-4Relevant articles and documents
Method for producing substituted thiopyridines
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, (2008/06/13)
A process for preparing thiopyridines of the formula I where the substituents are as defined in the description.