80554-69-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 80554-69-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,0,5,5 and 4 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 80554-69:
(7*8)+(6*0)+(5*5)+(4*5)+(3*4)+(2*6)+(1*9)=134
134 % 10 = 4
So 80554-69-4 is a valid CAS Registry Number.
80554-69-4Relevant articles and documents
A NOVEL CARBOXYL PROTECTING GROUP - THE CARBOXAMIDE DERIVED FROM 5,6-DIHYDROPHENANTHRIDINE -
Uchimaru, Tadafumi,Narasaka, Koichi,Mukaiyama, Teruaki
, p. 1551 - 1554 (2007/10/02)
Carboxyl groups protected as the amides derived from 5,6-dihydrophenanthridine are stable under a wide range of conditions and can be selectively deprotected by oxidation on treatment with cerium(IV)
