73819-07-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 73819-07-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,3,8,1 and 9 respectively; the second part has 2 digits, 0 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 73819-07:
(7*7)+(6*3)+(5*8)+(4*1)+(3*9)+(2*0)+(1*7)=145
145 % 10 = 5
So 73819-07-5 is a valid CAS Registry Number.
73819-07-5Relevant articles and documents
Statistical Syntheses of Rotaxanes
Schill, Gottfried,Beckmann, Wolfgang,Vetter, Walter
, p. 941 - 954 (2007/10/02)
The acetalisation of the 28-membered cyclic diols 11a, b with the long-chain dibromo ketone 12 gives acetals 13a, b.These compounds react with triphenylmethyllithium to give 17a, b and 18a, b from which the rotaxanes 20a, b are obtained in 0.066 or 0.18 a