861531-37-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 861531-37-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,6,1,5,3 and 1 respectively; the second part has 2 digits, 3 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 861531-37:
(8*8)+(7*6)+(6*1)+(5*5)+(4*3)+(3*1)+(2*3)+(1*7)=165
165 % 10 = 5
So 861531-37-5 is a valid CAS Registry Number.
861531-37-5Relevant articles and documents
Reaction of thiosalicylic acid with 1,4-quinones and cyclization of the resulting arylsulfanylbenzoic acids
Loskutov,Beregovaya
, p. 1405 - 1409 (2009)
Thiosalicylic acid reacts with 1,4-benzoquinone to give 2-(1,4-dihydroxyphenylsulfanyl)benzoic acid which undergoes intramolecular cyclization to 1,4-dihydroxythioxanthen-9-one in the presence of dehydrating agents. Cyclization of arylsulfanylbenzoic acid
