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Merck
CN

M1000

L-(−)-Malic acid

≥95% (titration)

Synonym(s):

(S)-(−)-2-Hydroxysuccinic acid, L-Hydroxybutanedioic acid

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About This Item

Linear Formula:
HO2CCH2CH(OH)CO2H
CAS Number:
Molecular Weight:
134.09
UNSPSC Code:
12352106
PubChem Substance ID:
NACRES:
NA.22
EC Number:
202-601-5
MDL number:
Beilstein/REAXYS Number:
1723541
Assay:
≥95% (titration)
Form:
powder
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Quality Level

assay

≥95% (titration)

form

powder

pKa (25 °C)

(1) 3.46, (2) 5.10

mp

101-103 °C ((lit.)), 101-103 °C (lit.)

solubility

water: 100 mg/mL, clear to very slightly hazy, colorless

density

1,595  g/cm3 at 68 °F

SMILES string

O[C@@H](CC(O)=O)C(O)=O

InChI

1S/C4H6O5/c5-2(4(8)9)1-3(6)7/h2,5H,1H2,(H,6,7)(H,8,9)/t2-/m0/s1

InChI key

BJEPYKJPYRNKOW-REOHCLBHSA-N

General description

L-Malic acid is the naturally occurring isomer of malic acid, found mainly in sour and unripe fruits.

Application

L-(-)-Malic acid may be used to prepare:
  • diethyl (S)-malate
  • ethyl (R)-2-hydroxyl-4-phenylbutanoate
  • ethyl (S)-2-hydroxyl-4-phenylbutanoate
  • D-homophenylalanine ethyl ester hydrochloride
  • furo[3,2-i]indolizines


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pictograms

Exclamation mark

signalword

Warning

hcodes

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2

Storage Class

11 - Combustible Solids

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves



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Protocols

Enzymatic Assay of Fumarase


A practical synthesis of ethyl (R)-and (S)-2-hydroxy-4-phenylbutanoate and D-homophenylalanine ethyl ester hydrochloride from L-malic acid.
Lin WQ, et al.
Tetrahedron Asymmetry, 12(11), 1583-1587 (2001)
A stereospecific synthesis of (-)-Bestatin from L-malic acid.
Norman BH and Morris ML.
Tetrahedron Letters, 33(45), 6803-6806 (1992)
Asymmetric synthesis of furo [3, 2-i] indolizines from L-malic acid.
Lee YS, et al.
Tetrahedron, 55(15), 4631-4636 (1999)



Global Trade Item Number

SKUGTIN
M1000-500G04061834037620
M1000-100G04061834037606
M1000-1KG04061834037613