Cas 1273326-28-5,ethyl (R)-(5-phenylthiophen-2-yl)hydroxyacetate

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Check Digit Verification of cas no

The CAS Registry Mumber 1273326-28-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,7,3,3,2 and 6 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1273326-28:
(9*1)+(8*2)+(7*7)+(6*3)+(5*3)+(4*2)+(3*6)+(2*2)+(1*8)=145
145 % 10 = 5
So 1273326-28-5 is a valid CAS Registry Number.

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1273326-28-5Relevant articles and documents

Enantioselective Friedel-Crafts alkylation of thiophenes with ethyl glyoxylate: Easy access to chiral secondary alcohols

Huang, Zhong,Zhang, Jingchang,Zhou, Yuqiang,Wang, Nai-Xing

supporting information; experimental part, p. 843 - 847 (2011/04/22)

Friedel-Crafts alkylation reactions of ethyl glyoxylate with various thiophenes to give the corresponding chiral secondary alcohols were demonstrated. The majority of these reactions proceeded with good enantioselectivities (up to 91%) and satisfactory is

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1273326-28-5