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98421-59-1

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98421-59-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 98421-59-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,8,4,2 and 1 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 98421-59:
(7*9)+(6*8)+(5*4)+(4*2)+(3*1)+(2*5)+(1*9)=161
161 % 10 = 1
So 98421-59-1 is a valid CAS Registry Number.

98421-59-1Relevant articles and documents

Synthesis and Diatropicity of a Phenanthrene-Annelated trans-Dimethyldihydropyrene: A Novel Molecule To Indicate the High ?-Bond Order of the 9,10 bond of Phenanthrene

Lai, Yee-Hing

, p. 6678 - 6683 (2007/10/02)

The trans-phenanthrodimethyldihydropyrene 6 has been synthesized from phenanthraquinone and 2,6-dichlorotoluene in 0.3-0.5percent overall yield by using Stevens or Wittig rearrangements and a Hofmann elimination sequence on the thiacyclophane 8B followed

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