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2-(n-butyl)-3-[2'-(1,3-oxazolin-4,4-dimethyl)-biphenyl-4-ylmethyl]-4-oxo-1,3-diazaspiro[4.4]non-1-ene-4-one is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

935477-52-4

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935477-52-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 935477-52-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,3,5,4,7 and 7 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 935477-52:
(8*9)+(7*3)+(6*5)+(5*4)+(4*7)+(3*7)+(2*5)+(1*2)=204
204 % 10 = 4
So 935477-52-4 is a valid CAS Registry Number.

935477-52-4Relevant academic research and scientific papers

AN IMPROVED PROCESS FOR PREPARATION OF IRBESARTAN

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Page/Page column 21, (2008/06/13)

A process for the preparation of Irbesartan of formula (I): Formula (I) comprising the steps of: (i) reacting 4' aminomethyl-2-cyano biphenyl of formula (VI) with 1-veleramido cyclopentane carboxylic acid of formula (V): Formula (VI) and Formula (V) in an organic solvent and in the presence of an acid, without activating the -COOH group of compound of formula (V) to give 1-(2'cyanobiphenyl-4-yl-methylaminocarbonyl)-1-pentanoylamino cyclopentane of formula (VII). Formula (VII) converting the compound of formula (VII) obtained in step (i) to Irbesartan of formula (I) by reacting the compound of the formula (VII) with tributyl tin azide in o-xylene to give Irbesartan of formula (I).

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