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118715-67-6

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118715-67-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 118715-67-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,8,7,1 and 5 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 118715-67:
(8*1)+(7*1)+(6*8)+(5*7)+(4*1)+(3*5)+(2*6)+(1*7)=136
136 % 10 = 6
So 118715-67-6 is a valid CAS Registry Number.

118715-67-6Relevant articles and documents

Chiral basket-shaped host compounds derived from diphenylglycoluril

Coolen, H. K. A. C.,Engelkamp, H.,Reek, J. N. H.,Priem, A. H.,Leeuwen, P. W. N. M. van,Nolte, R. J. M.

, p. 65 - 72 (2007/10/02)

The design and synthesis of two novel chiral receptors derived from diphenylglycoluril are described.The chirality in these molecules is due to the unsymmetrical positioning of amino functions in the crown ether rings with respect to the diphenylglycoluri

Basket-shaped hosts with semi-flexible handles

Smeets, J. W. H.,Visser, H. C.,Kaats-Richters, V. E. M.,Nolte, R. J. M.

, p. 147 - 153 (2007/10/02)

Basket-shaped hosts were synthesized starting from the concave building block 4: .To this end, oligo(oxyethylene)bridges, containing different aromatic rings, were attached to the 3,6- and 3',6'-positions of the xylylene rings of 4.These bridges include 5,6-benzo-1,4,7,10-tetraoxadec-5-ene, 5,6,7-benzo-1,4,8,11-tetraoxaundeca-5,6-diene, 5,6-(2,3-naphtho)-1,4,7,10-tetraoxa-dec-5-ene, 8,9-benzo-1,4,7,10,13,16-hexaoxahexadec-8-ene and 8,9-(2,3-naphtho)-1,4,7,10,13,16-hexaoxahexadec-8-ene chains.Alkali-metal ions and protonated aliphatic or aromatic diamines are bound in these baskets in a 1:1 host/guest ratio.For the metal ions, a clamshell-like or a sandwich-like complex is proposed.Aliphatic diammonium guests are bound in such a way that the methylene chains are wedged in between the o-xylylene units of the host, as concluded from the upfield shifts observed in the 1H NMR spectra of the guest CH2 protons.Free energies of binding of the new hosts with nineteen guests were measured using the picrate extraction technique.The highest -ΔG0 values were obtained for the complexes with the diammonium salts (-ΔG0 values up to 13.4 kcal/mol).

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