o-Toluic acid

o-Toluic acid, also 2-methylbenzoic acid, is an aromatic carboxylic acid, with formula (CH₃)C₆H₄(COOH). It is an isomer of p-toluic acid and m-toluic acid. When purified and recrystallized, o-toluic acid forms needle-shaped crystals. o-Toluic acid was first noticed by Sir William Ramsay, credited discoverer of the noble gases and winner of the 1904 Nobel Prize in Chemistry.

o-Toluic acid[1]

Skeletal formula of o-toluic acid Ball-and-stick model of the l-toluic acid molecule
Names
Preferred IUPAC name 2-Methylbenzoic acid
Other names ortho-toluic acid
Identifiers
CAS Number	118-90-1^Y
3D model (JSmol)	Interactive image
ChEBI	CHEBI:36632^N
ChEMBL	ChEMBL114957^Y
ChemSpider	8070^Y
ECHA InfoCard	100.003.896
KEGG	C07215^Y
PubChem CID	8373
UNII	9NR3033Y0U^Y
CompTox Dashboard (EPA)	DTXSID6026161
InChI InChI=1S/C8H8O2/c1-6-4-2-3-5-7(6)8(9)10/h2-5H,1H3,(H,9,10)^Y Key: ZWLPBLYKEWSWPD-UHFFFAOYSA-N^Y InChI=1/C8H8O2/c1-6-4-2-3-5-7(6)8(9)10/h2-5H,1H3,(H,9,10) Key: ZWLPBLYKEWSWPD-UHFFFAOYAI
SMILES O=C(O)c1ccccc1C
Properties
Chemical formula	C8H8O2
Molar mass	136.2 g/mol
Density	1.06 g/cm^3
Melting point	104 to 105 °C (219 to 221 °F; 377 to 378 K)
Boiling point	259 °C (498 °F; 532 K)
Magnetic susceptibility (χ)	-80.83·10^−6 cm^3/mol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N verify (what is ^YN ?)
Infobox references

o-Toluic acid is prepared by oxidation of o-xylene with nitric acid.[2]

References

1. O-TOLUIC ACID - Compound Summary, PubChem.
2. Harold E. Zaugg, Richard T. Rapala (1947). "o-Toluic Acid". Org. Synth. 27: 84. doi:10.15227/orgsyn.027.0084.CS1 maint: uses authors parameter (link)