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168039-92-7

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168039-92-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 168039-92-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,8,0,3 and 9 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 168039-92:
(8*1)+(7*6)+(6*8)+(5*0)+(4*3)+(3*9)+(2*9)+(1*2)=157
157 % 10 = 7
So 168039-92-7 is a valid CAS Registry Number.

168039-92-7Relevant articles and documents

Efficient Kg-Scale Synthesis of Thrombin Inhibitor CRC 220

Jendralla, Heiner,Seuring, Bernhard,Herchen, Joerg,Kulitzscher, Bernd,Wunner, Joachim,et al.

, p. 12047 - 12068 (2007/10/02)

Potent thrombin inhibitor 2 is prepared in 10 steps with 20percent overall yield from commercial 4 on a kg-scale by the convergent approach depicted in Schemes 1 and 2.The (R)-configuration of the 4-amidinophenylalanine piperidide moiety is controlled by asymmetric hydrogenation.A novel method, the hydrogenolysis of amidoximes 11 and 21, is employed to attain a particularly clean transformation of the cyano into the amidinium functionality.Despite of the amorphous nature of target compound 2, the approach is devoid of any chromatographic purification.

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