73872-20-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 73872-20-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,3,8,7 and 2 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 73872-20:
(7*7)+(6*3)+(5*8)+(4*7)+(3*2)+(2*2)+(1*0)=145
145 % 10 = 5
So 73872-20-5 is a valid CAS Registry Number.
73872-20-5Relevant articles and documents
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.