19693-40-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 19693-40-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,6,9 and 3 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 19693-40:
(7*1)+(6*9)+(5*6)+(4*9)+(3*3)+(2*4)+(1*0)=144
144 % 10 = 4
So 19693-40-4 is a valid CAS Registry Number.
19693-40-4Relevant academic research and scientific papers
Facile Syntheses of 1,3-Dithiol-2-ones and 1,3-Dithiole-2-thiones
Haley, Neil F.,Fichtner, Michael W.
, p. 2959 - 2962 (2007/10/02)
A facile ring closure of allyl xanthates or trithiocarbonates with iodine is discussed.The products of the reaction undergo basic dehydroiodination and acidic isomerization to give 1,3-dithiol-2-ones and -2-thiones in high yield.
