113544-20-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 113544-20-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,3,5,4 and 4 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 113544-20:
(8*1)+(7*1)+(6*3)+(5*5)+(4*4)+(3*4)+(2*2)+(1*0)=90
90 % 10 = 0
So 113544-20-0 is a valid CAS Registry Number.
InChI:InChI=1/C12H10OS2/c1-14-12-8-10(13)11(15-12)7-9-5-3-2-4-6-9/h2-8H,1H3/b11-7+
113544-20-0Relevant articles and documents
INTRAMOLECULAR MICHAEL AND ANTI-MICHAEL ADDITIONS OF THIOLATE TO CONJUGATED ACETYLENIC KETONES
Rudorf, Wolf-Dieter,Schwarz, Ralf
, p. 4267 - 4270 (2007/10/02)
The reaction of acetylenic ketones 1 with carbon disulfide in the basic system sodium hydride/dimethylformamide and subsequent intramolecular cyclization to 4H-thiopyran-4-ones 3 and 3(2H)-thiophenones 4 are reported.
