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117661-77-5

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117661-77-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 117661-77-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,7,6,6 and 1 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 117661-77:
(8*1)+(7*1)+(6*7)+(5*6)+(4*6)+(3*1)+(2*7)+(1*7)=135
135 % 10 = 5
So 117661-77-5 is a valid CAS Registry Number.

117661-77-5Downstream Products

117661-77-5Relevant articles and documents

PHOTOREACTION OF PHTHALIMIDES POSSESSING AN ORTHO-METHYLPHENYL GROUP IN THEIR N-SIDE CHAIN. SYNTHESIS OF TETRACYCLIC NITROGEN HETEROCYCLES

Machida, Minoru,Nakamura, Mayumi,Oda, Kazuaki,Takechi, Haruko,Ohno, Kosei,et al.

, p. 2683 - 2690 (2007/10/02)

Upon irradiation phthalimides (5 and 8) possesing o-methylphenyl group in their N-side chain gave mainly the tetracyclic ring systems (9 and 10).It was shown that the photocyclization occurs at ε- or ζ-position across the carbons of the benzene ring (B-ring).

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