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83727-08-6

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83727-08-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 83727-08-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,3,7,2 and 7 respectively; the second part has 2 digits, 0 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 83727-08:
(7*8)+(6*3)+(5*7)+(4*2)+(3*7)+(2*0)+(1*8)=146
146 % 10 = 6
So 83727-08-6 is a valid CAS Registry Number.

83727-08-6Relevant articles and documents

An anomalous preparing of a tetrahydro-2H-oxocine fused pyrrole derivative and its acid-catalyzed rearrangement

Chou, Shan-Yen,Chang, Lien-Shange,Chen, Shyh-Fong

, p. 833 - 839 (1999)

Condensation of 5-methylthio-2-benzoylpyrrole (1) with spiro[2.5]-5,7- dioxa-6,6-dimethyloctane-4,8-dione (3) using excess mount of Nail in DMF gave an anomalous tetrahydro-2H-oxocine fused pyrrole (10), which then undergoes an acid-catalyzed rearrangement in refluxing toluene/methanol (10:1, v/v) to afford the unexpected anti-aromatic compounds (15 and 16).

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