89228-50-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 89228-50-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,9,2,2 and 8 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 89228-50:
(7*8)+(6*9)+(5*2)+(4*2)+(3*8)+(2*5)+(1*0)=162
162 % 10 = 2
So 89228-50-2 is a valid CAS Registry Number.
89228-50-2Relevant articles and documents
METHYLENE-INDOLINES, INDOLENINES ET INDOLENINIUMS XVI NOUVELLE SYNTHESE D'HEXAHYDRODIBENZOFURANNES
Levy, Jean,Sigaut, Francoise
, p. 4987 - 4988 (1983)
Nitrous acid deaminated indolenines 1a,b to hemiketals 2a,b, which were reduced (Et3SiH/TFA) to hexahydrodibenzofurans 7a,b. 7b was identified with a compound prepared from Pummerer's ketone 8.