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144443-32-3

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144443-32-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 144443-32-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,4,4,4 and 3 respectively; the second part has 2 digits, 3 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 144443-32:
(8*1)+(7*4)+(6*4)+(5*4)+(4*4)+(3*3)+(2*3)+(1*2)=113
113 % 10 = 3
So 144443-32-3 is a valid CAS Registry Number.

144443-32-3Relevant articles and documents

Synthesis of novel cage quaternary salts via nucleophilic substitution of 1,3-diiodobicyclo[1.1.1 ]pentane. Further evidence for a stable 3-iodo-1-bicyclo[1.1.1]pentyl cation

Adcock, James L.,Gakh, Andrei A.

, p. 4875 - 4878 (2007/10/02)

Nucleophilic substitution of 1,3-diiodobicyclo[1.1.1]pentane by tertiary amines and pyridines was investigated. The structure of cage quaternary salts obtained together with the observation of the competitive addition of pyridine in the reaction of [1.1.1]propellane with iodine indicate the existence of a relatively stable "hot intermediate" very close in its structure to a stabilized 3-iodo-1-bicyclo[1.1.1]pentyl cation.

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