128702-20-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 128702-20-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,7,0 and 2 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 128702-20:
(8*1)+(7*2)+(6*8)+(5*7)+(4*0)+(3*2)+(2*2)+(1*0)=115
115 % 10 = 5
So 128702-20-5 is a valid CAS Registry Number.
128702-20-5Relevant articles and documents
SYNTHESES OF CHIRAL C=N DIENOPHILES : SULFONYLOXYIMINOMALONONITRILE AND ALKYL SULFONYLOXYIMINOCYANOACETATES
Blanco, Jose M.,Caamano, Olga,Eirin, Ana,Fernadez, Franco,Medina, Lucia
, p. 923 - 930 (2007/10/02)
High yield syntheses of one chiral sulfonyloxyiminomalononitrile and four alkyl sulfonyloxyimonocyanoacetate derivatives (3a-e), to be used in asymmetric hetero-Diels-Alder additions, are described.