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121668-45-9

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121668-45-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 121668-45-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,6,6 and 8 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 121668-45:
(8*1)+(7*2)+(6*1)+(5*6)+(4*6)+(3*8)+(2*4)+(1*5)=119
119 % 10 = 9
So 121668-45-9 is a valid CAS Registry Number.

121668-45-9Downstream Products

121668-45-9Relevant articles and documents

The synthesis of benzofuroquinolines. IX. A benzofuroisoquinolinone and a benzofuroisocoumarin

Yamaguchi,Uchiuzoh,Sanada

, p. 419 - 423 (2007/10/02)

Some procedures for a benzofuroisoquinolinone 1 were studied. Its O-analogous benzofuroisocoumarin 2 was synthesized from methyl salicylate with diethyl α-bromohomophthalate (9). And, the benzofuroisoquinolinone 1 was obtained by treating 2 with ammonia gas in a sealed tube.

An Unexpected Rearrangement of 2-(2-Benzofuranyl)-benzonitriles: a New Route to Phenylmethylene-dihydro-isoindolinones

Guillaumel, Jean,Boccara, Nicole,Demerseman, Pierre,Royer, Rene

, p. 1604 - 1605 (2007/10/02)

Depending on the solvent used, the alkaline hydrolysis of 2-(2-benzofuranyl)-benzonitriles leads to the expected amide or acid, or to isoindolinones by rearrangement.

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