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503433-71-4

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503433-71-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 503433-71-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,0,3,4,3 and 3 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 503433-71:
(8*5)+(7*0)+(6*3)+(5*4)+(4*3)+(3*3)+(2*7)+(1*1)=114
114 % 10 = 4
So 503433-71-4 is a valid CAS Registry Number.

503433-71-4Downstream Products

503433-71-4Relevant articles and documents

Synthesis of chiral C2-symmetric 1,10-phenanthrolines from naturally occurring monoterpenes

Chelucci, Giorgio,Loriga, Giovanni,Murineddu, Gabriele,Pinna, Gerard A.

, p. 73 - 78 (2007/10/03)

A convenient procedure for the preparation of chiral C2-symmetric 1,10-phenanthrolines bearing a chiral framework in the form of a cycloalkeno-condensed substituent in the 2,3- and 8,9-positions of the heterocycle is reported. Starting from the 2-benzyloxycyclohexanone, four 1,10-phenanthrolines derived from (-)-β-pinene, (+)-α-pinene, (-)-isopinocampheol, and (+)-camphor were prepared according to a method based on a double Michael-azaannulation-aromatization sequence.

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