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103872-55-5

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103872-55-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 103872-55-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,3,8,7 and 2 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 103872-55:
(8*1)+(7*0)+(6*3)+(5*8)+(4*7)+(3*2)+(2*5)+(1*5)=115
115 % 10 = 5
So 103872-55-5 is a valid CAS Registry Number.

103872-55-5Relevant articles and documents

The Norrish Type II Reaction of Thiophthalimides Having a Benzylic Hydrogen in an N-Alkyl Side Chain

Oda, Kazuaki,Yoshida, Eiichi,Ohno, Kosei,Machida, Minoru,Kanaoka, Yuichi

, p. 642 - 647 (2007/10/02)

Upon irradiation, thiophthalimides (4 and 5) possessing an N-ω-phenylalkyl substituent undergo the Norrish type II cyclization to give tricyclic isoindole derivatives (6-8).In the case of thiophthalimides (11) possessing an indene in the N-side chain, two competitive pathways, the Norrish type II and a Paterno-Buchi like type, were observed.Keywords: thiophthalimide; isoindole; photocyclization; Norrish type II reaction; Paterno-Buchi reaction; thietane; hydrogen abstraction.

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