215673-32-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 215673-32-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,5,6,7 and 3 respectively; the second part has 2 digits, 3 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 215673-32:
(8*2)+(7*1)+(6*5)+(5*6)+(4*7)+(3*3)+(2*3)+(1*2)=128
128 % 10 = 8
So 215673-32-8 is a valid CAS Registry Number.
215673-32-8Relevant academic research and scientific papers
Intermediates and processes for preparing benzo (b) thiophenes
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, (2008/06/13)
The instant invention provides processes for preparing compounds of formula IV, V, and IX, having the structures provided hereinbelow: These compounds are useful intermediates in the further preparation of benzo[b] thiophenes.
