1161881-57-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1161881-57-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,6,1,8,8 and 1 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1161881-57:
(9*1)+(8*1)+(7*6)+(6*1)+(5*8)+(4*8)+(3*1)+(2*5)+(1*7)=157
157 % 10 = 7
So 1161881-57-7 is a valid CAS Registry Number.
1161881-57-7Relevant articles and documents
A flexible route to new spirodioxanes, oxathianes, and morpholines
Goubert, Marlène,Canet, Isabelle,Sinibaldi, Marie-Eve
experimental part, p. 4182 - 4189 (2009/09/30)
This work describes a modular efficient route to 10-aza-4-thia-, 10-aza-4-oxa-, and 10-oxa-4-thia-1,7-dioxaspiro[5.5]undecanes. The synthetic pathway relies upon the iterative nucleophilic substitution of 1,3-dichloropropan-2-one O-benzyloxime by solketal