108817-03-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 108817-03-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,8,8,1 and 7 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 108817-03:
(8*1)+(7*0)+(6*8)+(5*8)+(4*1)+(3*7)+(2*0)+(1*3)=124
124 % 10 = 4
So 108817-03-4 is a valid CAS Registry Number.
108817-03-4Relevant articles and documents
Calixarenes with Four Differently Substituted Phenolic Units
Boehmer, Volker,Marschollek, Frank,Zetta, Lucia
, p. 3200 - 3205 (2007/10/02)
All three isomeric calixarenes (9a-c) with the four different substituents CH3, C(CH3)3, C6H5, and COOC2H5 in the para position were synthesized by an unequivocal reaction sequence.Starting with a para-substituted o-bromophenol it consists of two alter