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448961-10-2

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448961-10-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 448961-10-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,4,8,9,6 and 1 respectively; the second part has 2 digits, 1 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 448961-10:
(8*4)+(7*4)+(6*8)+(5*9)+(4*6)+(3*1)+(2*1)+(1*0)=182
182 % 10 = 2
So 448961-10-2 is a valid CAS Registry Number.

448961-10-2Relevant articles and documents

EPC synthesis of 5-substituted 2-oxo-cyclopentanecarboxylates via conjugate addition of cuprates to asymmetric shielded 2-oxo-cyclopentenecarboxylates

Urban, Ernst,Knuehl, Guido,Helmchen, Guenter

, p. 7229 - 7232 (1995)

Asymmetric shielded 2-oxo-cyclopentenecarboxylates 6n and 6x were prepared by trans-esterification of 2-oxo-cyclopentanecarboxylate 2 with camphor derived concave alcohols 1n and 1x and by subsequent introduction of a double bond via phenylselenides. Dias

Enatiomerically pure 5-substituted 2-oxo-cyclopentanecarboxylates by conjugate addition of cuprates to asymmetry shielded 2-oxo-cyclopentenecarboxylates

Urban,Knuhl,Helmchen

, p. 971 - 986 (2007/10/03)

Asymmetric shielded 2-oxo-cyclopentenecarboxylates 6n and 6x were prepared by transesterification of 2-oxo-cyclopentanecarboxylate 2 with camphor derived concave alcohols 1n and 1x and by subsequent introduction of a double bond via phenylselenides. Diastereoselective conjugate addition of equimolar amounts of mixed cuprates at -78°C and deprotection by ethanolysis gave enantiomerically pure 5-substituted 2-oxo-cyclopentanecarboxylates 13-18 and ent-13-18, valuable as chiral building blocks in natural product synthesis.

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