308341-67-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 308341-67-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,0,8,3,4 and 1 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 308341-67:
(8*3)+(7*0)+(6*8)+(5*3)+(4*4)+(3*1)+(2*6)+(1*7)=125
125 % 10 = 5
So 308341-67-5 is a valid CAS Registry Number.
308341-67-5Relevant academic research and scientific papers
Regiospecific synthesis of 2-substituted furanonaphthoquinones
Ohta,Doe,Morimoto,Kinoshita
, p. 731 - 734 (2007/10/03)
The naturally-occurring furanonaphthoquinones 1a-d have been synthesized from 3-furancarboxylic acid and 2,3-dimethoxybenzaldehyde via the Birch reduction-elimination.
