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1340503-86-7

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1340503-86-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1340503-86-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,4,0,5,0 and 3 respectively; the second part has 2 digits, 8 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 1340503-86:
(9*1)+(8*3)+(7*4)+(6*0)+(5*5)+(4*0)+(3*3)+(2*8)+(1*6)=117
117 % 10 = 7
So 1340503-86-7 is a valid CAS Registry Number.

1340503-86-7Relevant articles and documents

Me3SiCl-promoted intramolecular cyclization of aromatic compounds tethered with N,O-acetals leading to the facile preparation of 1,4-benzodiazepine skeletons

Sakai, Norio,Watanabe, Akimasa,Ikeda, Reiko,Nakaike, Yumi,Konakahara, Takeo

experimental part, p. 8837 - 8845 (2010/11/19)

The Me3SiCl-promoted intramolecular aminomethylation of a novel type of N,O-acetals, which were prepared via a facile three-step synthesis from N-alkylaniline derivatives and N-alkyl-2-oxazolidinones that leads to the production of pharmaceutically useful 1,4-benzodiazepine skeletons with a variety of functional groups is described. This method was successfully applied to the facile preparation of both tricyclic benzodiazepine derivatives and a 1,4-benzoxazepine derivative via 7-exo-trig cyclization.

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