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5-Methoxycarbonylpentansaeure-tert-butylester, also known as tert-butyl 5-methoxycarbonylpentanoate, is a chemical compound with the molecular formula C11H20O4. It is a colorless liquid that is soluble in organic solvents and is commonly used as a protecting group in organic synthesis, particularly in the preparation of various pharmaceuticals and agrochemicals. The compound is characterized by its ester functional group, which is derived from the reaction of 5-methoxycarbonylpentanoic acid with tert-butanol. It plays a crucial role in protecting the carboxylic acid group during chemical reactions, allowing for selective functionalization of other parts of the molecule.

52221-08-6

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52221-08-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 52221-08-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,2,2,2 and 1 respectively; the second part has 2 digits, 0 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 52221-08:
(7*5)+(6*2)+(5*2)+(4*2)+(3*1)+(2*0)+(1*8)=76
76 % 10 = 6
So 52221-08-6 is a valid CAS Registry Number.

52221-08-6Relevant academic research and scientific papers

PANTETHEINE DERIVATIVES AND USES THEREOF

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Paragraph 2121, (2020/06/19)

The present disclosure relates to compounds of Formula (I), (II), or (II'): (I), (II), (II'), and pharmaceutically acceptable salts or solvates thereof. The present disclosure also relates to pharmaceutical compositions comprising the compounds and therapeutic and diagnostic uses of the compounds and pharmaceutical compositions.

QUINAZOLINONE-TYPE COMPOUNDS AS CRTH2 ANTAGONISTS

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Page/Page column 77-78, (2012/05/04)

This application provides for compounds of the formula Formula I or a pharmaceutically acceptable salt thereof, wherein the individual variables are defined herein, as well as processes to prepare these compounds, pharmaceutical compositions comprising the same and their use in treating disease state associated with the CRTH2 receptor.

Alpha-and beta- substituted trifluoromethyl ketones as phospholipase inhibitors

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, (2008/06/13)

Inhibitors of the cytosolic phospholipase A2 enzymes are provided which are of use in controlling a wide variety of inflammatory diseases. The inhibitors of the present invention have the general formula where X, Z, R1, R2, R3, R4, Ra and Rb are as defined in the specification.

Alpha-and beta-substituted trifluoromethyl ketones as phospholipase inhibitors

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, (2008/06/13)

Inhibitors of the cytosolic phospholipase A2 enzymes are provided which are of use in controlling a wide variety of inflammatory diseases. The inhibitors of the present invention have the general formula where X, Z, R1, R2, R3, R4, Raand Rbare as defined in the specification.

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