40671-25-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 40671-25-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,0,6,7 and 1 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 40671-25:
(7*4)+(6*0)+(5*6)+(4*7)+(3*1)+(2*2)+(1*5)=98
98 % 10 = 8
So 40671-25-8 is a valid CAS Registry Number.
InChI:InChI=1/C8H5Cl2NS/c1-4-11-8-6(12-4)3-2-5(9)7(8)10/h2-3H,1H3
40671-25-8Relevant articles and documents
Photochemical Synthesis of Benzothiazoles
Paramasivam, R.,Ramakrishnan, V. T.
, p. 930 - 934 (2007/10/02)
Irradiation of o-halothioacetanilides (1a-p) affords benzothiazoles (2a-p) in general.In methanol medium, polyhalogenated thioacetanilides yield benzothiazoles with the loss of bromine atom in the 4- or 6-position of the benzothiazole.Arylation of benzothiazoles occurs in benzene medium.