159829-20-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 159829-20-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,9,8,2 and 9 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 159829-20:
(8*1)+(7*5)+(6*9)+(5*8)+(4*2)+(3*9)+(2*2)+(1*0)=176
176 % 10 = 6
So 159829-20-6 is a valid CAS Registry Number.
159829-20-6Relevant articles and documents
Synthesis of new heterocyclic compounds by the skraup reaction of amino- 9H-thioxanthen-9-ones
Fujiwara,Okabayashi
, p. 1322 - 1324 (1994)
The Skraup reaction of amino-9H-thioxanthen-9-ones was conducted in the presence of glycerol, fuming sulfuric acid, nitrobenzene, iron(II) sulfate and boric acid. 1-Amino-9H-thioxanthen-9-one (1) gave 12H- [1]benzothiopyrano[2,3-h]quinolin-12-one (5). 2-A
