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882039-02-3

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882039-02-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 882039-02-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,8,2,0,3 and 9 respectively; the second part has 2 digits, 0 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 882039-02:
(8*8)+(7*8)+(6*2)+(5*0)+(4*3)+(3*9)+(2*0)+(1*2)=173
173 % 10 = 3
So 882039-02-3 is a valid CAS Registry Number.

882039-02-3Downstream Products

882039-02-3Relevant articles and documents

New development of Meyers' methodology: Stereoselective preparation of an axially chiral 5,7-fused bicyclic lactam related to circumdatins/benzomalvins and asperlicins

Penhoat, Mael,Bohn, Pierre,Dupas, Georges,Papamicael, Cyril,Marsais, Francis,Levacher, Vincent

, p. 281 - 286 (2007/10/03)

The stereoselective preparation of a new Meyers' bicyclic lactam-bridged biaryl 1, highly structurally related to circumdatins, benzomalvins and asperlicins, is reported. Using the popular Meyers' diastereoselective lactamization, under dehydrating conditions (CH2Cl 2/reflux/MgSO4), trans-(aS,R,S)-1 was obtained in a rather modest yield of 25% and an excellent diastereoselectivity >95%. An alternative procedure making use of the activating agents of carboxylic acid (Mukaiyama reagent and FEP) allowed the lactamization process to take place under milder conditions (CH2Cl2/20°C) affording trans-(aS,R,S)-1 in fairly good yields (50%-85%) and in up to 65% de.

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