105891-52-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 105891-52-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,5,8,9 and 1 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 105891-52:
(8*1)+(7*0)+(6*5)+(5*8)+(4*9)+(3*1)+(2*5)+(1*2)=129
129 % 10 = 9
So 105891-52-9 is a valid CAS Registry Number.
105891-52-9Relevant articles and documents
A NOVEL, UNEQUIVOCAL SYNTHESIS OF POLYETHYLENE GLYCOLS
Coudert, Gerard,Mpassi, Michel,Guillaumet, Gerald,Selve, Claude
, p. 19 - 26 (2007/10/02)
Unequivocal synthesis of polyethyleneglycols is presented.The key step for this synthesis is the selective monobenzylation of oligoethyleneglycols by the phase transfer catalysis technique.