139214-75-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139214-75-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,2,1 and 4 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 139214-75:
(8*1)+(7*3)+(6*9)+(5*2)+(4*1)+(3*4)+(2*7)+(1*5)=128
128 % 10 = 8
So 139214-75-8 is a valid CAS Registry Number.
139214-75-8Relevant articles and documents
On the Synthesis of a Phenanthrene-2,7-quinone
Hewgill, Frank R.,Slamet, Riskiono,Stewart, Jeffery M.
, p. 3033 - 3042 (2007/10/02)
Oxidative coupling of 2,2',4,4'-tetramethoxystilbene-3,3'-diol 51 gave a 51percent yield of 1,3,6,8-tetramethoxyphenanthrene-2,7-quinone 52, the first isolated example of a quinone of this type.Similar oxidation of the corresponding diphenylethane 55 gave
