239090-00-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 239090-00-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,3,9,0,9 and 0 respectively; the second part has 2 digits, 0 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 239090-00:
(8*2)+(7*3)+(6*9)+(5*0)+(4*9)+(3*0)+(2*0)+(1*0)=127
127 % 10 = 7
So 239090-00-7 is a valid CAS Registry Number.
239090-00-7Relevant articles and documents
Synthesis of new enantiomerically pure monoketals of p-benzoquinone with C2-symmetry
De March, Pedro,Figueredo, Marta,Font, Josep,Medrano, Jordi
, p. 7907 - 7914 (1999)
Several new monoketals of p-benzoquinone with the structure of 1,3- dioxaspiro[4.5]deca-6,9-dien-8-one have been synthesised in enantiopure form by the straightforward reaction of the quinone with secondary C2-symmetric 1,2-diols. The preparati
