256235-63-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 256235-63-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,6,2,3 and 5 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 256235-63:
(8*2)+(7*5)+(6*6)+(5*2)+(4*3)+(3*5)+(2*6)+(1*3)=139
139 % 10 = 9
So 256235-63-9 is a valid CAS Registry Number.
256235-63-9Relevant academic research and scientific papers
Process for the preparation of chiral lactones
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, (2008/06/13)
The present invention relates to a process for the preparation of compounds of formula I wherein R1and R2are as defined in the specification as well as to the novel intermediates obtained by said process.
