87299-90-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 87299-90-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,2,9 and 9 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 87299-90:
(7*8)+(6*7)+(5*2)+(4*9)+(3*9)+(2*9)+(1*0)=189
189 % 10 = 9
So 87299-90-9 is a valid CAS Registry Number.
87299-90-9Relevant academic research and scientific papers
SYNTHESIS AND EPIMERIZATION OF 11b-SUBSTITUTED-INDOLIZINOINDOLE-5-CARBOXYLIC ACID METHYL ESTERS
Irikawa, Hajime,Okumura, Yasuaki
, p. 1055 - 1058 (2007/10/02)
The methoxide-catalyzed epimerization at C-5 of the 11b-substituted-indolizinoindole-5-carboxylic acid methyl esters was in line with the stereochemical relationship of the substituent on C-11b and the methoxycarbonyl group on C-5.
