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2,10-Di-tert-butyl-5,7-bis-(4-tert-butyl-phenyl)-12,12,14,14-tetramethyl-5,7,12,14-tetrahydro-pentacene is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

138956-20-4

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138956-20-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 138956-20-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,9,5 and 6 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 138956-20:
(8*1)+(7*3)+(6*8)+(5*9)+(4*5)+(3*6)+(2*2)+(1*0)=164
164 % 10 = 4
So 138956-20-4 is a valid CAS Registry Number.

138956-20-4Downstream Products

138956-20-4Relevant academic research and scientific papers

?-Conjugated Systems with Unique Electronic Structure: A Case of "Planarized" 1,3-Connected Polyarylmethyl Carbodianion and Stable Triplet Hydrocarbon Diradical

Rajca, Andrzej,Utamapanya, Suchada

, p. 1760 - 1767 (1992)

The effect of "planarization" on ?-conjugated 1,3-connected polyarylmethyls in connection with the electronic structure and magnetic properties is examined.The synthesis, ESR and UV-vis spectroscopy, voltammetry, and magnetic studies of triplet diradical

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