135664-67-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 135664-67-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,5,6,6 and 4 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 135664-67:
(8*1)+(7*3)+(6*5)+(5*6)+(4*6)+(3*4)+(2*6)+(1*7)=144
144 % 10 = 4
So 135664-67-4 is a valid CAS Registry Number.
135664-67-4Relevant academic research and scientific papers
2,2'-Binaphthylidene-1,1'-diones - Colour and Structure
Goeltner, Christine,Laatsch, Helmut
, p. 1085 - 1089 (2007/10/02)
The UV spectra of deep purple to green 2,2'- binaphthylidene-1,1'-diones 3 may be explained by substituent increments with high reliability.This allows assistence in structure elucidation of substituted 1-naphtholes 1a by UV-Vis measurements of their oxid
