20503-98-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 20503-98-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,5,0 and 3 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 20503-98:
(7*2)+(6*0)+(5*5)+(4*0)+(3*3)+(2*9)+(1*8)=74
74 % 10 = 4
So 20503-98-4 is a valid CAS Registry Number.
20503-98-4Relevant academic research and scientific papers
Ultrasound in Cycloaddition Reactions: Sound-promoted Dipolar Cycloadditions of Nitrones with Unactivated Alkenes
Borthakur, Dipak R.,Sandhu, Jagir S.
, p. 1444 - 1445 (2007/10/02)
Ultrasound has been found to accelerate considerably the cycloaddition of unreactive conjugated nitrones with typical unactivated alkenes.
