221206-34-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 221206-34-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,1,2,0 and 6 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 221206-34:
(8*2)+(7*2)+(6*1)+(5*2)+(4*0)+(3*6)+(2*3)+(1*4)=74
74 % 10 = 4
So 221206-34-4 is a valid CAS Registry Number.
221206-34-4Relevant articles and documents
New approach to synthesis of derivatives of 2-(5-hydroxybenzofuryl-3)naphthofurans
Mukhanova,Lykova,Alekseeva,Granik
, p. 651 - 657 (2007/10/03)
Derivatives of 2-methyl-3-benzoyl-5-hydroxynaphtho[1,2-b]furans and 3-acetonyl-4-benzoylhydroxynaphthols were synthesized by the reaction of tertiary enaminoketones with p-naphthoquinone. The transformations of derivatives of 2-methyl-3-benzoyl-5-hydroxyn
