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223769-30-0

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223769-30-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 223769-30-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,3,7,6 and 9 respectively; the second part has 2 digits, 3 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 223769-30:
(8*2)+(7*2)+(6*3)+(5*7)+(4*6)+(3*9)+(2*3)+(1*0)=140
140 % 10 = 0
So 223769-30-0 is a valid CAS Registry Number.

223769-30-0Downstream Products

223769-30-0Relevant articles and documents

An asymmetric conjugate addition reaction of lithium organocopper reagent controlled by a chiral amidophosphine

Kanai, Motomu,Nakagawa, Yuichi,Tomioka, Kiyoshi

, p. 3831 - 3842 (2007/10/03)

Examination of the behaviors of the chiral amidophosphines 1-14 in the asymmetric conjugate addition reaction of lithium organocopper with chalcone and cycloalkenone revealed that the reaction efficiency is governed by many factors including copper salt, solvent, molecular ratio of copper and organolithium, and the structure of the substrate. The reaction with cycloalkenone gave the adduct in up to 94% ee under the stoichiometric conditions.

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