487047-31-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 487047-31-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,8,7,0,4 and 7 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 487047-31:
(8*4)+(7*8)+(6*7)+(5*0)+(4*4)+(3*7)+(2*3)+(1*1)=174
174 % 10 = 4
So 487047-31-4 is a valid CAS Registry Number.
487047-31-4Relevant articles and documents
Preparation of aryl-substituted butenolides using mucohalic acids
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Page/Page column 9, (2008/06/13)
Methods and materials for preparing 3-aryl-2-buten-4-olides and 2,3-bisaryl-2-buten-4-olides are disclosed. The methods include reacting a mucohalic acid with a reducing agent to give a 2,3-dihalo-2-buten-4-olide, which undergoes at least one Pd catalyzed cross-coupling reaction with an arylboronic acid.