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51146-57-7 Usage


Ibuprofen is a non-steroidal anti-inflammatory drug with diverse biochemical actions, most notably inhibiting COX-1 and COX-2 (IC50s = 2.6 and 1.53 μM, respectively). It is commonly synthesized as a racemic mixture of (S) and (R) isomers (Item No. item 70280). (R)-Ibuprofen is an enantiomer that is generally not considered a COX inhibitor and is instead thought to be involved in pathways of lipid metabolism as it is incorporated into triglycerides along with fatty acids. The (R) enantiomer can, however, inhibit NF-κB activation (IC50 = 121.8 μM) in response to T-cell stimulation as well as block superoxide formation, β-glucuronidase release, and LTB4 generation by stimulated neutrophils (IC50 values range from 40-100 μM). 50-60% of (R)-ibuprofen is inverted to (S)-ibuprofen in humans after oral administration.

Chemical Properties

White Crystalline Solid


A nonsteroidal anti-inflammatory drug (NSAID); activity resides primarily in the (S)-isomer.

Check Digit Verification of cas no

The CAS Registry Mumber 51146-57-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,1,1,4 and 6 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 51146-57:
97 % 10 = 7
So 51146-57-7 is a valid CAS Registry Number.



According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 13, 2017

Revision Date: Aug 13, 2017


1.1 GHS Product identifier

Product name levibuprofen

1.2 Other means of identification

Product number -
Other names (R)-(-)-Ibuprofen

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:51146-57-7 SDS

51146-57-7Relevant articles and documents

O 2-(N -Hydroxy(methoxy)-2-ethanesulfonamido) protected diazen-1-ium-1,2-diolates: Nitric oxide release via a base-induced β-elimination cleavage

Huang, Zhangjian,Knaus, Edward E.

, p. 1178 - 1181 (2011)

O2-(Ethanesulfohydroxamic acid) and O2-(N-methoxy-2- ethanesulfonylamido) diazen-1-ium-1,2-diolates (4-7), a novel type of O 2-(protected) diazeniumdiolate, were synthesized using a key thioacetate oxidation reaction. Nitr

Bidentate phosphine-phosphine oxide ligand and intermediate, preparation method and application thereof


Paragraph 0431-0434, (2020/11/10)

The invention discloses a bidentate phosphine-phosphine oxide ligand and an intermediate, a preparation method and application thereof. The phosphine oxide compound is shown as a formula I and/or ent-I. The phosphine oxide compound is used as a metal ligand and is applied to Suzuki-Miyaura coupling reaction so that generation of self-coupled by-products is avoided, and an alpha-aryl carbonyl compound is obtained; and the dosages of the ligand and the metal catalyst are less.

Synthesis of Chiral Esters via Asymmetric Wolff Rearrangement Reaction

Meng, Jing,Ding, Wei-Wei,Han, Zhi-Yong

, p. 9801 - 9805 (2019/10/16)

The first asymmetric Wolff rearrangement reaction that directly converts α-diazoketones into broadly useful chiral α,α-disubstituted carboxylic esters with high enantioselectivities (up to 97.5:2.5 er) is reported. The cascade reaction proceeds through the seamless combination of visible-light-induced formation of the ketene intermediate and asymmetric ketene esterification using a readily available benzotetramisole-type catalyst.

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