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[R-(R*,R*)]-2-(4-fluorophenyl)-β,δ-dihydroxy-5-(1-methylethyl)-3-phenyl-4-(phenylcarbamoyl)-1H-pyrrole-1-heptanoic acid dicyclohexylamine salt is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

262285-93-8

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262285-93-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 262285-93-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,6,2,2,8 and 5 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 262285-93:
(8*2)+(7*6)+(6*2)+(5*2)+(4*8)+(3*5)+(2*9)+(1*3)=148
148 % 10 = 8
So 262285-93-8 is a valid CAS Registry Number.

262285-93-8Upstream product

262285-93-8Relevant academic research and scientific papers

Process for producing atorvastatin hemicalcium

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Page/Page column 8, (2008/06/13)

A process is provided for preparing pharmaceutical grade atorvastatin hemicalcium salt comprising: (a) deesterifying, wherein R is an ester protecting group to (b) extracting R(R*,R*)-3 into an organic solvent or mixture of solvents, (c) adding a base of formula NR1R2R3 wherein R1, R2 and R3 are independently selected from H, substituted or non-substituted C1 to C7 alkyl, C6 to C9 aryl, C8 to C10 aralkyl or aminoalkyl to form atorvastatin base salt, (d) isolating by precipitation of the above atorvastatin base salt and purifying when necessary,

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