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188014-75-7

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188014-75-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 188014-75-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,8,0,1 and 4 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 188014-75:
(8*1)+(7*8)+(6*8)+(5*0)+(4*1)+(3*4)+(2*7)+(1*5)=147
147 % 10 = 7
So 188014-75-7 is a valid CAS Registry Number.

188014-75-7Relevant articles and documents

Planar tether control groups and π-facial selectivity: Intramolecular cycloadditions for polycyclic systems

Millan, D. Scott,Pham, Tham T.,Lavers, Jodi A.,Fallis, Alex G.

, p. 795 - 798 (1997)

The direct synthesis of the fused ring systems 11 (R = Me, H) and the decalin 14 are described. The use of a planar tether control group (either aromatic ring or double bond) greatly facilitates the key Diels-Alder cycloadditions. A second intermolecular cycloaddition of 14 with cyclopentadiene afforded the tetracyclic adduct 17. The interaction between the allylic ethers and diene subslituents influences the facial selectivity observed in these examples.

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