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15121-71-8

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15121-71-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 15121-71-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,5,1,2 and 1 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 15121-71:
(7*1)+(6*5)+(5*1)+(4*2)+(3*1)+(2*7)+(1*1)=68
68 % 10 = 8
So 15121-71-8 is a valid CAS Registry Number.

15121-71-8Relevant articles and documents

Highly Chemo- And Enantioselective Hydrogenation of 2-Substituted-4-oxo-2-alkenoic Acids

Chen, Weiping,Jiang, Ru,Liu, Xian,Nie, Huifang,Wen, Jialin,Yao, Lin,Zhang, Xumu

supporting information, (2020/07/02)

The highly chemo- and enantioselective hydrogenation of (E)-2-substituted-4-oxo-2-alkenoic acids was established for the first time using the Rh/JosiPhos complex, affording a series of chiral α-substituted-γ-keto acids with excellent results (up to 99% yield and >99% ee) and high efficiency (up to 3000 TON). In addition, the importance of this methodology was further demonstrated by a concise and gram-scale synthesis of the anti-inflammatory drug (R)-flobufen.

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