540493-07-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 540493-07-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,4,0,4,9 and 3 respectively; the second part has 2 digits, 0 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 540493-07:
(8*5)+(7*4)+(6*0)+(5*4)+(4*9)+(3*3)+(2*0)+(1*7)=140
140 % 10 = 0
So 540493-07-0 is a valid CAS Registry Number.
540493-07-0Relevant articles and documents
Substituent Interaction with Ring Sulfur in some Heterocyclic Compounds
McKinnon, David M.,Abouzeid, A. A.
, p. 749 - 752 (2007/10/02)
The infrared carbonyl absorptions of 7-acetyl-1,2-benzisothiazoles are similar to 7-acetylbenzothiophenes, but are lower by approximately 15 cm-1 than the corresponding benzofurans.The reasons for this are discussed.
