75445-71-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 75445-71-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,5,4,4 and 5 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 75445-71:
(7*7)+(6*5)+(5*4)+(4*4)+(3*5)+(2*7)+(1*1)=145
145 % 10 = 5
So 75445-71-5 is a valid CAS Registry Number.
75445-71-5Relevant articles and documents
Dimeric Naphthoquinones, IV1). - Synthesis of Biramentaceone, Mamegakinone and Rotundiquinone
Laatsch, Hartmut
, p. 1321 - 1347 (2007/10/02)
Mamegakinone (8a), biramentaceone (12a), 3,3'-bijuglone (8b), 2,2-bijuglone (12b) and their methyl ethers were prepared by oxidative coupling of substituted 4-methoxy-1-naphthols; indigoids like 24 are intermediates.Cooxidation of the isomeric dimethoxy-1