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227796-00-1

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227796-00-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 227796-00-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,7,7,9 and 6 respectively; the second part has 2 digits, 0 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 227796-00:
(8*2)+(7*2)+(6*7)+(5*7)+(4*9)+(3*6)+(2*0)+(1*0)=161
161 % 10 = 1
So 227796-00-1 is a valid CAS Registry Number.

227796-00-1Downstream Products

227796-00-1Relevant articles and documents

Diaza-18-Crown-6 Ligands Containing Two Aminophenol Side Arms: New Heterobinuclear Metal Ion Receptors

Su, Ning,Bradshaw, Jerald S.,Zhang, Xian Xin,Savage, Paul B.,Krakowiak, Krzysztof E.,Izatt, Reed M.

, p. 3825 - 3829 (2007/10/03)

Three diaza-18-crown-6 ligands substituted with two aminophenol side arms were synthesized as possible heterobinuclear metal ion receptors. Bis(p-aminophenol)-substituted diaza-18-crown-6 ligand (13) was prepared by treating the diazacrown with α-bromo-4-nitro-o-cresol in the presence of N,N-diisopropylethylamine followed by reduction of the nitro groups. Bis(o-aminophenol)-substituted diaza-18-crown-6 ligands (11 and 12) were prepared in two steps by the aminomethylation of either an o-nitrophenol or o-(trifluoroacetamido)phenol followed by reduction of the nitro groups or hydrolysis of the trifluoroacetamide groups. All new bisphenol-armed diazacrown ligands were purified by ultrasonication in MeOH followed by filtration and drying. Interaction of the ligands with Na+, K+, Ag+, and Cu2+ was evaluated by a calorimetric titration technique at 25°C in MeOH. The complexes of Ag+ and Cu2+ are much more stable than those of Na+ and K+. Heterobinuclear complexes were observed for 11-Cu2+ - Na+ and 12-Cu2+-Na+ but not for 13-Cu2+-Na+ or for 12-Cu2+-Ag+.

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