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165615-26-9

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165615-26-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 165615-26-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,5,6,1 and 5 respectively; the second part has 2 digits, 2 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 165615-26:
(8*1)+(7*6)+(6*5)+(5*6)+(4*1)+(3*5)+(2*2)+(1*6)=139
139 % 10 = 9
So 165615-26-9 is a valid CAS Registry Number.

165615-26-9Relevant articles and documents

Benzannulation of 3-substituted pyrroles to indoles

Katritzky, Alan R.,Ledoux, Stephane,Nair, Satheesh K.

, p. 5728 - 5730 (2003)

In a new general indole synthesis, the anion derived from benzotriazolyl derivative 5b underwent regioselective 1,4-addition to various α,β-unsaturated ketones; subsequent acid-catalyzed cyclization formed the corresponding indoles 1a-f.

Synthesis and Diels-Alder reactions of the furo[3,4-b]pyrrole ring system. A new indole ring synthesis

Moskalev, Nikolai V.,Gribble, Gordon W.

, p. 197 - 201 (2007/10/03)

The previously unknown furo[3,4-b]pyrrole ring system has been synthesized from the appropriate pyrrolo hydroxyketones by acid-catalyzed cyclodehydration. Diels-Alder reactions of these furo[3,4-b]pyrroles affords a new synthesis of indoles.

1-(BENZENESULFONYL)PYRROLE-3-CARBOXALDEHYDE

Xiao, Dong,Ketcha, Daniel M.

, p. 503 - 506 (2007/10/02)

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