189231-98-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 189231-98-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,9,2,3 and 1 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 189231-98:
(8*1)+(7*8)+(6*9)+(5*2)+(4*3)+(3*1)+(2*9)+(1*8)=169
169 % 10 = 9
So 189231-98-9 is a valid CAS Registry Number.
189231-98-9Relevant academic research and scientific papers
A convenient asymmetric access to triquinanic compounds
Bintz-Giudicelli,Weymann,Uguen,De Cian,Fischer
, p. 2841 - 2844 (2007/10/03)
Thermal rearrangement of a propargylic sulfinate prepared from (R)-pulegone led, with an acceptable diastereoselectivity, to a spirosulfone which could be transformed into dihydropentalenic acid, methyl ester.
