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872001-56-4

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872001-56-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 872001-56-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,7,2,0,0 and 1 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 872001-56:
(8*8)+(7*7)+(6*2)+(5*0)+(4*0)+(3*1)+(2*5)+(1*6)=144
144 % 10 = 4
So 872001-56-4 is a valid CAS Registry Number.

872001-56-4Relevant articles and documents

Practical asymmetric synthesis of RO5114436, a CCR5 receptor antagonist

Huang, Xiaojun,O'Brien, Erin,Thai, Felicia,Cooper, Gary

, p. 592 - 599 (2011/07/08)

A practical asymmetric synthesis of a 3,7-diazabicyclo[3.3.0]octane derivative (1), a representative of a new class of potent CCR5 receptor antagonists, is described. The benzylamine stereogenic center of 1 was introduced by a ruthenium-catalyzed asymmetric reductive amination using (R)-MeOBIPHEP as ligand. Aldehyde 4, prepared by Parikh-Doering oxidation, was used without workup in the reductive amination reaction, which not only simplified the process but also overcame the instability of 4. The 3,7-diazabicyclo[3.3.0]octane core was obtained by a [3 + 2] cycloaddition.

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