128590-08-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 128590-08-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,5,9 and 0 respectively; the second part has 2 digits, 0 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 128590-08:
(8*1)+(7*2)+(6*8)+(5*5)+(4*9)+(3*0)+(2*0)+(1*8)=139
139 % 10 = 9
So 128590-08-9 is a valid CAS Registry Number.
128590-08-9Relevant academic research and scientific papers
A new ring expansion approach to 3-formyl-2-cyclohepten-1-ones
Guerrero,Parrilla,Camps
, p. 1873 - 1876 (2007/10/02)
Reaction of non-enolizable 2-n-butylthiomethylene cyclohexanones with methoxy-(phenylthio)methyllithium, followed by hydrolysis of the diastereomeric mixture of resulting alcohols, provides a new and efficient ring enlargement reaction for the synthesis o
