128203-50-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 128203-50-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,2,0 and 3 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 128203-50:
(8*1)+(7*2)+(6*8)+(5*2)+(4*0)+(3*3)+(2*5)+(1*0)=99
99 % 10 = 9
So 128203-50-9 is a valid CAS Registry Number.
128203-50-9Relevant academic research and scientific papers
SYNTHESIS OF AN AMINOPYRAZOLIDINE SUBSTITUTED QUINOLONE ACID
Kim, Kyoung Soon,Ryan, Patrick C.
, p. 79 - 86 (2007/10/02)
A synthesis of a new heterocycle, 2-methyl-4-(S)-Cbz-aminopyrazolidine (2), and the preparation of aminopyrazolidine substituted quinolone acid 1 are reported.
