128810-19-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 128810-19-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,8,1 and 0 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 128810-19:
(8*1)+(7*2)+(6*8)+(5*8)+(4*1)+(3*0)+(2*1)+(1*9)=125
125 % 10 = 5
So 128810-19-5 is a valid CAS Registry Number.
128810-19-5Relevant articles and documents
Polydiphenyldiacetylenes
-
, (2008/06/13)
Disclosed herein are polydiphenyldiacetylenes having the following repeating unit (III): STR1 (wherein R1 denotes a hydrogen atom or a methoxy group; R2 denotes a hydrogen atom, a methoxy group or a methylamino group; R3 d