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103164-24-5

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103164-24-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 103164-24-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,3,1,6 and 4 respectively; the second part has 2 digits, 2 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 103164-24:
(8*1)+(7*0)+(6*3)+(5*1)+(4*6)+(3*4)+(2*2)+(1*4)=75
75 % 10 = 5
So 103164-24-5 is a valid CAS Registry Number.

103164-24-5Relevant articles and documents

A one-flask synthesis of dihydronaphthalenemethanols by directed addition of organolithium reagents to BHA naphthalenecarboxylates

Shindo, Mitsuru,Koga, Kenji,Asano, Yasutomi,Tomioka, Kiyoshi

, p. 4955 - 4968 (2007/10/03)

The 1,4-addition reaction of organolithium reagents with 2,6-bis(tert- butyl)-4-methoxyphenyl naphthalenecarboxylates gave regioselectively substituted dihydronaphthalenecarboxylates in high yields. Successive treatment of the esters with organolithiums in THF, lithium triethylborohydride, methyl iodide, and finally sodium borohydride in methanol, provided vegio- and stereoselectively the corresponding 1,1,2- and 1,2,2-trisubstituted dihydronaphthalenylmethanols in good yields. This one- flask process is constituted from a sequence of five reactions involving a reductive generation of an aldehyde metal enolate from a ketene as the key step.

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