83716-07-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 83716-07-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,3,7,1 and 6 respectively; the second part has 2 digits, 0 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 83716-07:
(7*8)+(6*3)+(5*7)+(4*1)+(3*6)+(2*0)+(1*7)=138
138 % 10 = 8
So 83716-07-8 is a valid CAS Registry Number.
83716-07-8Relevant articles and documents
Synthesis and Reactions of 2H-Benzothienooxazine-2,4(1H)-dione
Coppola, Gary M.,Hardtmann, Goetz E.,Pfister, Oskar R.
, p. 717 - 720 (2007/10/02)
The title compound 5 is synthesized by the reaction of the potassium salt of 3-aminobenzothiophene-2-carboxylic acid with phosgene.Compound 5 is readily alkylated to give 6 with methyl iodide, benzyl bromide, or propargyl bromide in the presence of sod
