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241466-63-7

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241466-63-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 241466-63-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,4,1,4,6 and 6 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 241466-63:
(8*2)+(7*4)+(6*1)+(5*4)+(4*6)+(3*6)+(2*6)+(1*3)=127
127 % 10 = 7
So 241466-63-7 is a valid CAS Registry Number.

241466-63-7Downstream Products

241466-63-7Relevant articles and documents

An asymmetric synthesis of the key precursor to (-)-indolizomycin

Groaning, Michael D.,Meyers

, p. 4639 - 4642 (2007/10/03)

Using chiral bicyclic lactams, containing an α,β-unsaturation, the key precursor of (-)-indolizomycin was obtained in optically pure form. The sequence involved a >20:1 diastereoselective cyclopropanation of the unsaturated lactam 5 employing sulfoxonium methylide. TiCl4 mediated addition of allyltrimethylsilane afforded pyrrolidone 7 in a diastereomeric ratio of >20:1. The appropriately substituted pyrrolidone 2 was prepared by debenzylation and subsequent alkylation with 3-bromoproponic ester. The six step sequence from commercially available starting materials was performed in 26% overall yield.

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