139080-09-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139080-09-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,0,8 and 0 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 139080-09:
(8*1)+(7*3)+(6*9)+(5*0)+(4*8)+(3*0)+(2*0)+(1*9)=124
124 % 10 = 4
So 139080-09-4 is a valid CAS Registry Number.
139080-09-4Relevant articles and documents
The Reaction of 2-Substituted Cycloalkanones with Aldehydes under Acidic Conditions
Sato, Tadashi,Hayase, Kengo
, p. 3384 - 3389 (2007/10/02)
The title reaction proceeded with either ring enlargement or bicyclic compound formation, as well as the aldol reaction, depending upon the types of the reactants and reaction conditions.