143056-43-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 143056-43-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,3,0,5 and 6 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 143056-43:
(8*1)+(7*4)+(6*3)+(5*0)+(4*5)+(3*6)+(2*4)+(1*3)=103
103 % 10 = 3
So 143056-43-3 is a valid CAS Registry Number.
143056-43-3Relevant articles and documents
Method of preparing 2-bromo-4,6-dinitromesitylene
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, (2008/06/13)
A method of preparing 2-bromo-4,6-dinitromesitylene having only small amounts of impurities, by first mixing fuming sulfuric acid with bromomesitylene, and then adding concentrated nitric acid.