309253-23-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 309253-23-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,0,9,2,5 and 3 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 309253-23:
(8*3)+(7*0)+(6*9)+(5*2)+(4*5)+(3*3)+(2*2)+(1*3)=124
124 % 10 = 4
So 309253-23-4 is a valid CAS Registry Number.
309253-23-4Relevant academic research and scientific papers
An improved procedure for the synthesis of 4,4-disubstituted-3-oxo-1,2,5-thiadiazolidine 1,1-dioxides
Xiao,Timberlake
, p. 773 - 777 (2007/10/03)
An improved synthesis for the preparation of 3-oxo-1,2,5-thiadiazolidine 1,1-dioxides has been developed. This facile two-step procedure from α-amino acid esters and chlorosulfonyl isocyanate results in excellent yields of products.
