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39872-62-3

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39872-62-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 39872-62-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,9,8,7 and 2 respectively; the second part has 2 digits, 6 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 39872-62:
(7*3)+(6*9)+(5*8)+(4*7)+(3*2)+(2*6)+(1*2)=163
163 % 10 = 3
So 39872-62-3 is a valid CAS Registry Number.

39872-62-3Downstream Products

39872-62-3Relevant articles and documents

PREPARATION OF NAPHTHALENE DERIVATIVES BY REACTION OF BENZYNES WITH TIOPHENE-1,1-DIOXIDES

Nakayama, Juzo,Kuroda, Masami,Hoshino, Masamatsu

, p. 1233 - 1236 (2007/10/02)

The reaction of benzynes with thiophene-1,1-dioxides afford the Diels-Alder cycloadducts which spontaneously lose sulphur dioxide to give the corresponding naphthalene derivatives in moderate yields.Further reaction of benzyne with naphthalenes yielding dibenzobarrelenes is observed in a few cases.

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