503570-30-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 503570-30-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,0,3,5,7 and 0 respectively; the second part has 2 digits, 3 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 503570-30:
(8*5)+(7*0)+(6*3)+(5*5)+(4*7)+(3*0)+(2*3)+(1*0)=117
117 % 10 = 7
So 503570-30-7 is a valid CAS Registry Number.
503570-30-7Relevant articles and documents
Efficient and regioselective synthesis of functionalized pyrroles by cyclocondensation of 1,3-dicarbonyl dianions with α-azidoketones
Langer, Peter,Freifeld, Ilia
, p. 2668 - 2669 (2002)
The cyclocondensation of 1,3-dicarbonyl dianions with α-azidoketones regioselectively afforded 2-alkylidenepyrrolidines which were transformed into functionalized pyrroles by treatment with acid.
