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128228-05-7

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128228-05-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 128228-05-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,2,2 and 8 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 128228-05:
(8*1)+(7*2)+(6*8)+(5*2)+(4*2)+(3*8)+(2*0)+(1*5)=117
117 % 10 = 7
So 128228-05-7 is a valid CAS Registry Number.

128228-05-7Downstream Products

128228-05-7Relevant academic research and scientific papers

Synthesis of syn-Substituted Triptycenes via Heteroatom-directed Metallation

Kawase, Takeshi,Asai, Nobuo,Ogawa, Tatsuo,Oda, Masaji

, p. 339 - 340 (1990)

Heteroatoms in 9-substituted triptycenes direct syn-lithiation at the benzene rings, providing a new method for the synthesis of 1,9-di- and 1,8,9-tri-substituted triptycenes.

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