937720-91-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 937720-91-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,3,7,7,2 and 0 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 937720-91:
(8*9)+(7*3)+(6*7)+(5*7)+(4*2)+(3*0)+(2*9)+(1*1)=197
197 % 10 = 7
So 937720-91-7 is a valid CAS Registry Number.
937720-91-7Relevant articles and documents
Synthesis and disproportionation of ABAC-type oxacalix[4]arenes
Konishi, Hisatoshi,Mita, Takayuki,Morikawa, Osamu,Kobayashi, Kazuhiro
, p. 3029 - 3032 (2007)
An efficient method to prepare ABAC-type oxacalix[4]arenes by a '3+1' fragment synthesis and their CsF-catalyzed disproportionation producing an equilibrium mixture of three oxacalix[4]arenes are described.
