198691-57-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 198691-57-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,8,6,9 and 1 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 198691-57:
(8*1)+(7*9)+(6*8)+(5*6)+(4*9)+(3*1)+(2*5)+(1*7)=205
205 % 10 = 5
So 198691-57-5 is a valid CAS Registry Number.
198691-57-5Relevant articles and documents
Rapid synthesis of polyester dendrimers
Bo, Zhishan,Zhang, Xi,Zhang, Changmei,Wang, Zhiqiang,Yang, Meilin,Shen, Jiacong,Ji, Yiping
, p. 2931 - 2935 (2007/10/03)
Aryl polyester dendrimers and dendrons have been prepared by using 'branched monomer strategies', in which the surface and the focal point of the multi-branched monomer have been protected with two different kinds of protective group. The protective group
