75507-21-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 75507-21-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,5,5,0 and 7 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 75507-21:
(7*7)+(6*5)+(5*5)+(4*0)+(3*7)+(2*2)+(1*1)=130
130 % 10 = 0
So 75507-21-0 is a valid CAS Registry Number.
75507-21-0Relevant articles and documents
MACROCYCLES. 32. HOMOLYTIC DEHYDRODIMERIZATION OF CROWN ETHERS
Luk'yanenko, N. G.,Lobach, A. V.,Parfenova, M. N.,Lyamtseva, L. N.,Timofeev, O. S.,Gren' A. I.
, p. 940 - 943 (2007/10/02)
The corresponding bis(crown ethers), as well as phenyl- and hydroxy-substituted crown ethers, were obtained by homolytic dehydrodimerization of 12-crown-4, 15-crown-5, and 18-crown-6 in benzene or water.