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1206188-41-1

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1206188-41-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1206188-41-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,0,6,1,8 and 8 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1206188-41:
(9*1)+(8*2)+(7*0)+(6*6)+(5*1)+(4*8)+(3*8)+(2*4)+(1*1)=131
131 % 10 = 1
So 1206188-41-1 is a valid CAS Registry Number.

1206188-41-1Relevant articles and documents

Access to α-substituted amino acid derivatives via 1,3-dipolar cycloaddition of α-amino ester derived nitrones

Nguyen, Thanh Binh,Beauseigneur, Alice,Martel, Arnaud,Dhal, Robert,Laurent, Mathieu,Dujardin, Gilles

, p. 611 - 620 (2010)

(Chemical Equation Presented) Amino acid derived nitrones were conveniently synthesized in good-to-excellent yields by condensation of α-ketoesters with N-benzylhydroxylamine. The cycloaddition reactions of these nitrones with different alkenes were investigated under thermal solvent-free conditions. Considering conversions, yields, and selectivities, alkyl vinyl ethers have proven to be valuable partners to achieve this transformation, which creates a tetrafunctionalized stereogenic quaternary center. Fromthe adducts derived from vinyl ethers, a three-step access to highly functionalized α-substituted amino acid derivatives is described.

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