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117768-67-9

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117768-67-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 117768-67-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,7,7,6 and 8 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 117768-67:
(8*1)+(7*1)+(6*7)+(5*7)+(4*6)+(3*8)+(2*6)+(1*7)=159
159 % 10 = 9
So 117768-67-9 is a valid CAS Registry Number.

117768-67-9Relevant articles and documents

POLYMERISATION OF INDOLE. PART 2. A NEW INDOLE TRIMER

Ishii, Hisashi,Murakami, Keiko,Sakurada(nee Kawanabe), Eri,Hosoya, Katsuhiro,Murakami, Yasuoki

, p. 2377 - 2386 (2007/10/02)

Treatment of indole (1) with toluene-p-sulphonic acid in benzene provided the 2,3'-indole trimer (4), a positional isomer of the well known 3,3'-indole trimer (3).The structure of the new trimer (4) was established by comparitive studies with the trimers (3) and (4).

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