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681059

Sigma-Aldrich

2-Methyl-6-nitrobenzoic anhydride

97%

Synonym(s):

MNBA

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About This Item

Empirical Formula (Hill Notation):
C16H12N2O7
CAS Number:
434935-69-0
Molecular Weight:
344.28
MDL number:
MFCD06797117
UNSPSC Code:
12352108
PubChem Substance ID:
24885612
NACRES:
NA.22

Quality Level

200

Assay

97%

form

solid

mp

173-177 °C

functional group

anhydride
ester
nitro

SMILES string

Cc1cccc(c1C(=O)OC(=O)c2c(C)cccc2[N+]([O-])=O)[N+]([O-])=O

InChI

1S/C16H12N2O7/c1-9-5-3-7-11(17(21)22)13(9)15(19)25-16(20)14-10(2)6-4-8-12(14)18(23)24/h3-8H,1-2H3

InChI key

YEKPNMQQSPHKBP-UHFFFAOYSA-N

General description

2-Methyl-6-nitrobenzoic anhydride is a reagent employed as a coupling promoter in the synthesis of amides, lactones, esters, and peptides.

Application

2-Methyl-6-nitrobenzoic anhydride can be used:
  • As a versatile lactonization reagent applicable in the preparation of varieties of macrolide natural products and lactones.
  • As a reaction promoter in the synthesis of carboxamide derivatives by using corresponding amines and carboxylic acids.
  • In the total synthesis of GRP78 inhibitor prunustatin A, antifungal compound (3R,16E,20E,23R)-(−)-eushearilide and an antiobestic drug tetrahydrolipstatin.

Pictograms

Exclamation mark
GHS07

Signal Word

Warning

Hazard Statements

H315,H319,H335

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
WXBF4603V
WXBF4166V
WXBF2893V
WXBF3770V
WXBF1488V

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2-Methyl-6-nitrobenzoic anhydride
Encyclopedia of Reagents for Organic Synthesis, Second Edition (2009)
Takayuki Tonoi et al.
ACS omega, 6(5), 3571-3577 (2021-02-16)
A depsipeptidic analogue of FE399 was efficiently synthesized mainly through macrolactamization using 2-methyl-6-nitrobenzoic anhydride (MNBA), and a detailed investigation of the desired 16-membered macrolactam core of FE399 was performed. It was determined that the combination of MNBA and a catalytic
Ryohei Hirano et al.
Journal of mass spectrometry : JMS, 53(8), 665-674 (2018-05-17)
CYP3A phenotyping provides a means for personalized drug therapy. We focused our attention on the plasma 6β-hydroxycortisol (6β-OHF) to cortisol ratio as an index for CYP3A phenotyping. In the present study, we developed a sensitive and reliable method for the
Dahye Kim et al.
Molecules (Basel, Switzerland), 26(4) (2021-02-12)
Steroid 5-α reductase (5AR) is responsible for the reduction of steroids to 5-α reduced metabolites, such as the reduction of testosterone to 5-α dihydrotestosterone (DHT). A new adverse outcome pathway (AOP) for 5AR inhibition to reduce female reproduction in fish
A novel and efficient macrolactonization of ω-hydroxycarboxylic acids using 2-methyl-6-nitrobenzoic anhydride (MNBA)
Shiina S, et al.
Tetrahedron Letters, 43(42), 7535-7539 (2002)
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