212841-97-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 212841-97-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,2,8,4 and 1 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 212841-97:
(8*2)+(7*1)+(6*2)+(5*8)+(4*4)+(3*1)+(2*9)+(1*7)=119
119 % 10 = 9
So 212841-97-9 is a valid CAS Registry Number.
212841-97-9Relevant articles and documents
Synthesis of the benz[a]anthraquinone core of angucyclinone antibiotics
Kalogerakis, Aris,Groth, Ulrich
, p. 843 - 844 (2003)
A general method for the synthesis of benz[a]anthraquinones is reported. The key step is a catalytic cobalt-mediated [2+2+2]-cycloaddition of a triyne, which affords an angularly substituted tetracycle. Oxidation of this core gives the typical structure o