4,4’,(5’)-Di-(tert-butylcyclohexano)-18-crown-6 is a crown ether-based sorbent used in the analysis and separation of minerals.
Check Digit Verification of cas no
The CAS Registry Mumber 223719-29-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,3,7,1 and 9 respectively; the second part has 2 digits, 2 and 9 respectively. Calculate Digit Verification of CAS Registry Number 223719-29: (8*2)+(7*2)+(6*3)+(5*7)+(4*1)+(3*9)+(2*2)+(1*9)=127 127 % 10 = 7 So 223719-29-7 is a valid CAS Registry Number.
223719-29-7 Well-known Company Product Price
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Aldrich
(34683) 4′,4″(5″)-Di-tert-butyldicyclohexano-18-crown-6 technical, mixture of isomers, ≥90.0% (GC)