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17958-52-0

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17958-52-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 17958-52-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,7,9,5 and 8 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 17958-52:
(7*1)+(6*7)+(5*9)+(4*5)+(3*8)+(2*5)+(1*2)=150
150 % 10 = 0
So 17958-52-0 is a valid CAS Registry Number.

17958-52-0Relevant articles and documents

Formal synthesis of the bisbenzylisoquinoline alkaloid berbamunine by asymmetric substitution of chiral organolithium compounds

Gawley, Robert E.,Smith, Gregory A.

, p. 167 - 179 (2011/07/07)

Asymmetric alkylation of enantiomeric tetrahydroisoquinolyl oxazolines was achieved with 96-97% diastereoselectivity. Removal of the oxazoline chiral auxiliary and further transformations provide a straightforward synthesis of the two synthetic intermediates that were previously synthesized by resolution, and which comprise a formal synthesis of berbamunine by Ullman coupling. ARKAT-USA, Inc.

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