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66164-99-6

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66164-99-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 66164-99-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,6,1,6 and 4 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 66164-99:
(7*6)+(6*6)+(5*1)+(4*6)+(3*4)+(2*9)+(1*9)=146
146 % 10 = 6
So 66164-99-6 is a valid CAS Registry Number.

66164-99-6Relevant articles and documents

General and efficient syntheses of C18-4,8-sphingadienines via S(N)2'-type homoallylic coupling reactions mediated by thioether-stabilized copper reagents

Wang,Wu,Jiang,Singh

, p. 8146 - 8151 (2000)

The stereoselective syntheses of C18-4,8-sphingadienines 3 and 4 as analogues of sphingosine 1 are described. The key step in these syntheses involved a novel S(N)2'-type homoallylic coupling reaction between the corresponding thioether-stabilized allylic copper reagents and the allylic mesylate 7. The thioether-stabilized allylic copper reagents were easily prepared and retained the configuration of their double bond during the coupling reactions, thus overcoming the problem of isomerization which was normally associated with the use of allylic organometallic reagents in such applications.

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