88884-05-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 88884-05-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,8,8,8 and 4 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 88884-05:
(7*8)+(6*8)+(5*8)+(4*8)+(3*4)+(2*0)+(1*5)=193
193 % 10 = 3
So 88884-05-3 is a valid CAS Registry Number.
88884-05-3Relevant academic research and scientific papers
Synthesis and Properties of Thiopyranoquinazolines
Dusemund, Juergen,Gruschow, Bettina
, p. 27 - 37 (2007/10/02)
Starting from the 5-aminothiochromones 5, the thiopyranoquinazolines 11 and their S,S-dioxides 2 were prepared.In contrast to 2a, which was reduced by formamide to give 17, formamide opened the thiopyranone ring of 7a to form the quinolone 20.
