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116073-68-8

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116073-68-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 116073-68-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,6,0,7 and 3 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 116073-68:
(8*1)+(7*1)+(6*6)+(5*0)+(4*7)+(3*3)+(2*6)+(1*8)=108
108 % 10 = 8
So 116073-68-8 is a valid CAS Registry Number.

116073-68-8Relevant articles and documents

MACROCYCLIC AND MACROPOLYCYCLIC COMPOUNDS BASED UPON 1,3-DISUBSTITUTED PROPANE UNITS

Pratt, John A. E.,Sutherland, Ian O.,Newton, Roger F.

, p. 13 - 22 (2007/10/02)

Synthetic routes to the macrocyclic polyamine derivatives (1) and (3) are described, together with an investigation of the complexing properties of the triamines (1d) and (3d) with primary alkylammonium cations.Macrotricyclic and macrotetracyclic compounds may be obtained from the macrocycle (1) by a stepwise procedure whereas macrocycle (3b) can be converted into a macrotricyclic derivative in a one step alkylation procedure.The alkylation of the tetrahydropyrimidone (18) with α,α'-dibromo-m-xylene gives the calix arene analogue (19) which adopts the 'cone' (21a) and '1,3-alternate' (21b) conformations.The macrocyclic hexa-amine (23) may be synthesized by a simple alkylation procedure whereas the octa-amine (27) required a systematic stepwise synthesis.The hexa-amine salt (23)*6 HBr shows selectivity in forming inclusion complexes with the dicarboxylate anions (1-)O2C(CH2)nCO2(1-).

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