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23289-99-8

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23289-99-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 23289-99-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,3,2,8 and 9 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 23289-99:
(7*2)+(6*3)+(5*2)+(4*8)+(3*9)+(2*9)+(1*9)=128
128 % 10 = 8
So 23289-99-8 is a valid CAS Registry Number.

23289-99-8Relevant articles and documents

Highly enantioselective synthesis of β-hydroxysulfonamides by asymmetric transfer hydrogenation

Geng, Zhicong,Wu, Yun,Miao, Shifeng,Shen, Zongxuan,Zhang, Yawen

, p. 907 - 909 (2011/03/21)

A series of optically active β-hydroxy sulfonamides were synthesized for the first time by asymmetric transfer hydrogenation of the corresponding β-ketosulfonamides using the Ru-TsDPEN-HCOOH-Et3N catalytic system, in excellent yields (up to 95%

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