139938-22-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139938-22-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,9,3 and 8 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 139938-22:
(8*1)+(7*3)+(6*9)+(5*9)+(4*3)+(3*8)+(2*2)+(1*2)=170
170 % 10 = 0
So 139938-22-0 is a valid CAS Registry Number.
139938-22-0Relevant articles and documents
Synthesis of Partially Saturated N-Substituted 4H-3,1-Benzothiazine-2(1H)-thiones
Perjesi, Pal,Sohar, Pal
, p. 1047 - 1054 (2007/10/02)
Acid-catalyzed reaction of 2-arylidenecyclohexanones 1 with N-substituted dithiocarbamic acids 2 gave open-chain addition products 3 and 4.Dehydration of 3 and 4 afforded only one of the three possible isomeric N-substituted 4H-3,1-benzothiazine-2(1H)-thi
