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129519-18-2

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129519-18-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 129519-18-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,9,5,1 and 9 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 129519-18:
(8*1)+(7*2)+(6*9)+(5*5)+(4*1)+(3*9)+(2*1)+(1*8)=142
142 % 10 = 2
So 129519-18-2 is a valid CAS Registry Number.

129519-18-2Relevant articles and documents

First Total Synthesis of (-)-Dioncophylline A ("Triphyophylline") and of the Selected Stereoisomers: Complete (Revised) Stereostrucure

Bringmann, Gerhard,Jansen, Johannes R.,Reuscher, Helmut,Ruebenacker, Martin

, p. 643 - 646 (1990)

The first total synthesis of dioncophylline A (previously "triphyophylline") and some selected stereoisomers is described, using an intramolecular-type mixed aryl coupling method via ester-type prefixed molecular moieties.Simultaneously, this synthesis establishes the complete (revised) stereostructure of dioncophylline A as 1a, which is thereby the first fully elucidated naphthylisoquinoline alkaloid of Dioncophyllaceae.

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