82942-57-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 82942-57-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,2,9,4 and 2 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 82942-57:
(7*8)+(6*2)+(5*9)+(4*4)+(3*2)+(2*5)+(1*7)=152
152 % 10 = 2
So 82942-57-2 is a valid CAS Registry Number.
82942-57-2Relevant articles and documents
New Helical Hydrocarbons, VII. Clamped Quaterphenyl Hydrocarbons
Wittek, Mechtild,Voegtle, Fritz
, p. 2533 - 2539 (2007/10/02)
The new many-membered hydrocarbons 1 - 4 are synthesized starting with 3-ethoxycyclohexenone; 5 is available through Ullmann-coupling.DNMR studies show that these molecular skeletons with the exception of 4 are comparatively rigid helices.The larger sulfi
