189996-97-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 189996-97-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,9,9,9 and 6 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 189996-97:
(8*1)+(7*8)+(6*9)+(5*9)+(4*9)+(3*6)+(2*9)+(1*7)=242
242 % 10 = 2
So 189996-97-2 is a valid CAS Registry Number.
189996-97-2Relevant articles and documents
Bis(arylmethylene)bicyclo[3.3.1]nonane-2,6-Diones and Their Properties
Averina,Semioshkin,Borisova,Zefirov
, p. 492 - 497 (2007/10/03)
A series of the trans,trans-isomers of 3,7-bis(arylmethylene)bicyclo[3.3.1]nonane-2,6-diones was obtained under conditions of the aldol-crotonic condensation. Bromination and reduction reactions were studied on the example of the bis(benzylidene) derivati
