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149790-52-3

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149790-52-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 149790-52-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,9,7,9 and 0 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 149790-52:
(8*1)+(7*4)+(6*9)+(5*7)+(4*9)+(3*0)+(2*5)+(1*2)=173
173 % 10 = 3
So 149790-52-3 is a valid CAS Registry Number.

149790-52-3Relevant articles and documents

Synthesis and Inclusion Properties of Carbonyl-Bridged Analogs of Acyclic p-t-Butylphenol-Formaldehyde Oligomers

Ohba, Yoshihiro,Irie, Keisaku,Zhang, Fu Sheng,Sone, Tyo

, p. 828 - 835 (2007/10/02)

A series of compounds in which a part or all of the methylene bridges of acyclic p-t-butylphenol-formaldehyde oligomers are replaced by C=O bridge(s) has been synthesized.The carbonyl-bridged tetramers, except for that with no methylene bridge, formed crystalline host-guest complexes with various organic compounds; those with two C=O bridges were superior regarding complexation, regardless of the position of the bridges.Exclusive guest selectivity of the tetramer with one terminal C=O bridge was observed for benzene and its methyl derivatives in a two-component system.The fully carbonyl-bridged dimer, trimer, tetramer, and pentamer had no complexing-capability.The thermal stability of benzene complexes (host : guest = 2 : 1) of the tetramers with one C=O bridge, as estimated from their thermal dissociation rates, are remarkably lower than that of the parent tetramer.Oximes derived from the tetramers with one C=O bridge were much more effective than the corresponding carbonyl-bridged ones regarding their complex-forming capability.

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