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123409-81-4

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123409-81-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 123409-81-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,3,4,0 and 9 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 123409-81:
(8*1)+(7*2)+(6*3)+(5*4)+(4*0)+(3*9)+(2*8)+(1*1)=104
104 % 10 = 4
So 123409-81-4 is a valid CAS Registry Number.

123409-81-4Relevant articles and documents

Resolution and absolute configuration of 1,2,3,5,6,10bβ-hexahydro-6α-phenylpyrrolo[2,1-a]isoquinoline (McN-4612-Z). A problem of determination of the enantiomeric purity for a tertiary amine

Maryanoff,McComsey

, p. 911 - 914 (1985)

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Synthetic method of tetrahydroisoquino ring compound and tetrahydro-beta-carbo ring compound

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Paragraph 0047-0052; 0203; 0205-0207, (2020/12/09)

The invention provides a synthetic method of a tetrahydroisoquino ring compound and a tetrahydro-beta-carbo ring compound, and belongs to the technical field of synthesis. According to the method forsynthesizing the tetrahydroisoquino and the tetrahydro-b

Diastereoselective allylation of 3,4-dihydro-4-phenylisoquinoline. Convenient methods for the preparation of cis- and trans-1-allyl-4-phenyl-1,2,3, 4-tetrahydroisoquinoline#

Taketoshi, Ayako,Hosoda, Naoya,Yamaguchi, Yoshitaka,Asami, Masatoshi

experimental part, p. 2418 - 2424 (2009/09/25)

Diastereoselective allylation of 3,4-dihydro-4-phenylisoquinoline by several allylating reagents was examined. Reactions using allyltin or allylsilane in the presence of alkyl chloroformate and a catalytic amount of trimethylsilyl triflate gave trans-1-allyl-4-phenyl-1,2,3,4- tetrahydroisoquinoline with moderate diastereoselectivity. In contrast, cis-1-allyl-4-phenyl-1,2,3,4-tetrahydroisoquinoline was obtained predominantly in the reactions using allyllithium, triallylborane, allylzinc bromide, and diallylzinc. cis-1-Allyl-4-phenyl-1,2,3,4-tetrahydroisoquinoline was transformed to (6S*,10bR*)-hexahydro-6-phenylpyrrolo[2,1-a]isoquinoline, a potential antidepressant agent, in five steps.

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