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1212275-99-4

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1212275-99-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1212275-99-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,1,2,2,7 and 5 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1212275-99:
(9*1)+(8*2)+(7*1)+(6*2)+(5*2)+(4*7)+(3*5)+(2*9)+(1*9)=124
124 % 10 = 4
So 1212275-99-4 is a valid CAS Registry Number.

1212275-99-4Relevant articles and documents

Rh(iii)-Catalyzed diastereoselective transfer hydrogenation: An efficient entry to key intermediates of HIV protease inhibitors

Chen, Gen-Qiang,Lang, Qi-Wei,Phansavath, Phannarath,Ratovelomanana-Vidal, Virginie,Wang, Fangyuan,Wu, Ting,Yin, Congcong,Zhang, Xumu,Zheng, Long-Sheng

supporting information, p. 3119 - 3122 (2020/03/23)

A highly efficient diastereoselective transfer hydrogenation of α-aminoalkyl α′-chloromethyl ketones catalyzed by a tethered rhodium complex was developed and successfully utilized in the synthesis of the key intermediates of HIV protease inhibitors. With the current Rh(iii) catalyst system, a series of chiral 3-amino-1-chloro-2-hydroxy-4-phenylbutanes were produced in excellent yields and diastereoselectivities (up to 99% yield, up to 99?:?1 dr). Both diastereomers of the desired products could be efficiently accessed by using the two enantiomers of the Rh(iii) catalyst.

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