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259222-89-4

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259222-89-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 259222-89-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,9,2,2 and 2 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 259222-89:
(8*2)+(7*5)+(6*9)+(5*2)+(4*2)+(3*2)+(2*8)+(1*9)=154
154 % 10 = 4
So 259222-89-4 is a valid CAS Registry Number.

259222-89-4Downstream Products

259222-89-4Relevant articles and documents

Synthesis and anion-selective complexation of cyclophane-based cyclic thioureas

Sasaki, Shin-ichi,Mizuno, Masaaki,Naemura, Koichiro,Tobe, Yoshito

, p. 275 - 283 (2007/10/03)

Cyclic thiourea derivatives having three different types of cyclophane structure, ortho-meta, meta-meta, and meta-para, and a lariat-type thiourea, were synthesized, and their anion-binding ability was examined. The association constants for the complexation between the receptors and several anions in DMSO-d6 were measured by the titration method using 1H NMR spectroscopy. All receptors, except for the meta-para cyclophane, exhibit selective binding to the dihydrogenphosphate anion, which is stronger than that of the acyclic reference compound. The lariat-type receptor binds anions even more strongly than the cyclic receptors which do not possess the third binding site.

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