81577-90-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81577-90-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,5,7 and 7 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 81577-90:
(7*8)+(6*1)+(5*5)+(4*7)+(3*7)+(2*9)+(1*0)=154
154 % 10 = 4
So 81577-90-4 is a valid CAS Registry Number.
81577-90-4Relevant academic research and scientific papers
1,4-Dithio-β-threofuranosides by Intramolecular Cyclisation of Dithiane Threoses
Thiem, Joachim,Wessel, Hans-Peter
, p. 607 - 611 (2007/10/02)
An exclusive formation of the β anomer of γ-halopropyl-1,4-dithio-threofuranosides occurs by intramolecular cyclisation of D-threose dithianes with a leaving group in terminal position involving a cyclic sulfonium intermediate.
