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113519-34-9

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113519-34-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 113519-34-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,3,5,1 and 9 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 113519-34:
(8*1)+(7*1)+(6*3)+(5*5)+(4*1)+(3*9)+(2*3)+(1*4)=99
99 % 10 = 9
So 113519-34-9 is a valid CAS Registry Number.

113519-34-9Relevant articles and documents

ASYMMETRIC MICHAEL ADDITION/LACTAMIZATION VIA SAMP-/RAMP-HYDRAZONES ENANTIOSELECTIVE SYNTHESIS OF SUBSTITUTED TETRAHYDRO-2,5(1H,3H)-QUINOLINEDIONES

Enders, Dieter,Demir, Ayhan S.,Puff, Heinrich,Franken, Sybille

, p. 3795 - 3798 (2007/10/02)

An efficient and highly diastereo- and enantioselective annulation of cyclic 1.3-diketones to tetrahydro-quinolinediones of type 4 and 5 in good overall yields is described.The key step is the Michael addition of the corresponding lithiated SAMP-/RAMP-hydrazones to arylidenemalonates followed by lactamization with virtually complete asymmetric induction (de,ee98percent).

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