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1223401-40-8

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1223401-40-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1223401-40-8 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,2,3,4,0 and 1 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1223401-40:
(9*1)+(8*2)+(7*2)+(6*3)+(5*4)+(4*0)+(3*1)+(2*4)+(1*0)=88
88 % 10 = 8
So 1223401-40-8 is a valid CAS Registry Number.

1223401-40-8Relevant articles and documents

Synthetic studies directed towards various homologues of natural Sesquiterpene-Coumarin ethers: The Domino approach

Corbu, Andrei,Castro, Juan M.,Aquino, Maurizio,Gandara, Zoila,Retailleau, Pascal,Arseniyadis, Simeon

supporting information; experimental part, p. 1483 - 1493 (2010/06/13)

A domino-based strategy was used to construct analogues containing the basic skeleton of the monocyclic sesquiter-pene-coumarin ethers galbanic acid (1) and secodrial (3), through conversion of the domino adduct 19 into 10 and 11, chosen as representative targets. 1H NMR patterns, corroborated by X-ray crystallographic analysis for two of the four possible diastereomeric arrangements of the six-membered B-ring common to various A-seco terpenes, have been determined. The observed trends help in the design of substituent combinations that provide a tool for diastereomeric recognition, depending on the cis/trans arrangement of the adjacent methyl groups and the adopted conformations.

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