213622-05-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 213622-05-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,3,6,2 and 2 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 213622-05:
(8*2)+(7*1)+(6*3)+(5*6)+(4*2)+(3*2)+(2*0)+(1*5)=90
90 % 10 = 0
So 213622-05-0 is a valid CAS Registry Number.
213622-05-0Relevant articles and documents
3-Acetyl-2H-thiopyran-2-ones by [4+2]-cycloaddition reactions of enaminothioketones with acetylketene
Greif, D.,Pulst, M.,Feindt, A.
experimental part, p. 578 - 580 (2011/10/05)
3-Acetyl-2H-thiopyran-2-ones 3 are available in a one step procedure by [4+2]-cycloaddition reactions of enaminothioketones with acetylketene.