906719-71-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 906719-71-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,0,6,7,1 and 9 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 906719-71:
(8*9)+(7*0)+(6*6)+(5*7)+(4*1)+(3*9)+(2*7)+(1*1)=189
189 % 10 = 9
So 906719-71-9 is a valid CAS Registry Number.
906719-71-9Relevant articles and documents
Preparation of substituted butenolides via palladium-free etherification and amination of masked mucohalic acids
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Page/Page column 9, (2010/02/11)
Methods and materials for preparing 4-substituted-2-buten-4-olides are disclosed. The methods include reacting a masked mucohalic acid with a primary or secondary amine or with an arylol in the presence of a base. Unlike existing processes, the disclosed