123771-02-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 123771-02-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,3,7,7 and 1 respectively; the second part has 2 digits, 0 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 123771-02:
(8*1)+(7*2)+(6*3)+(5*7)+(4*7)+(3*1)+(2*0)+(1*2)=108
108 % 10 = 8
So 123771-02-8 is a valid CAS Registry Number.
123771-02-8Relevant academic research and scientific papers
Studies on heterocyclic compounds. VII. Syntheses of novel furo[2,3-b]chromones [1]
Kuo,Wu,Huang,Wu,Huang,Chou
, p. 605 - 608 (2007/10/02)
Furo[2,3-b]chromone (1a) was conveniently prepared by the PPE-promoted cyclization of 5-[2'-carboxy-phenoxy)furan-2-carboxylic acid (8) which was made from methyl salicylate and ethyl 5-nitrofuran-2-carboxylate. Furo[2,3-b]chromon-2-acrylic acid (13) was
