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71283-67-5

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71283-67-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 71283-67-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,1,2,8 and 3 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 71283-67:
(7*7)+(6*1)+(5*2)+(4*8)+(3*3)+(2*6)+(1*7)=125
125 % 10 = 5
So 71283-67-5 is a valid CAS Registry Number.

71283-67-5Relevant articles and documents

PROCESS FOR PREPARING (R)-ARYLOXYPROPIONIC ACID ESTER DERIVATIVES

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Page 15-16, (2008/06/13)

The present invention relates to a method for preparing optically active (R)-aryloxypropionic acid ester derivatives, and more particularly to a method for preparing (R)- aryloxypropionic acid ester derivatives with high optical purity and good yield at low cost from phenol derivatives with various substituted functional groups and (S)-alkyl O-arylsulfonyl lactates.

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