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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HCID 65105Generated: October 23, 2026

(+)-L-Leucine methyl ester

(S)-Methyl 2-amino-4-methylpentanoate · (S)-Leu-OMe · Leucine methyl · L-Leucine methyl · L-METHYL-LEUCINE · methyl L-leucinate · leucine methyl ester · methyl (2S)-2-amino-4-methylpentanoate

https://huagongshe.com/en/chemical/65105

(+)-L-Leucine methyl ester molecular structure

Identifiers & Physical Properties

CAS No.2666-93-5
Molecular formulaC7H15NO2
Average molar mass145.2 g/mol
Monoisotopic mass145.11027872 g/mol
SMILESCOC(=O)[C@@H](N)CC(C)C
InChIKeyQVDXUKJJGUSGLS-LURJTMIESA-N
PubChem CID65105
ChEMBLCHEMBL1229070
ChEBICHEBI:44075
EC No.220-205-0
DTXSIDDTXSID30883883

Chemical & Physical Properties

XLogP0.9
Topological polar surface area52.3
Hydrogen bond donors1
Hydrogen bond acceptors3
Rotatable bonds4
Heavy atoms10
Formal charge0
Complexity112
SpringerMaterials PropertiesBoiling point
Boiling point79-79.5 °C(Press: 2 Torr)
Density0.9533 g/cm3(Temp: 17 °C)
Storage conditions2-8°C(protect from light)
pKa (acidity coefficient)7.95±0.42(Predicted)
FDA UNIIG3M3TO108Y
EPA Substance Registry SystemL-Leucine, methyl ester (2666-93-5)
GHS pictogramGHS07
Signal wordWarning
GHS hazard statementsH315-H319-H335
GHS precautionary statementsP261-P305+P351+P338
TSCA inventory statusTSCA listed

Safety & Regulations

GHS classificationWarningH317 (100%): May cause an allergic skin reaction [Warning Sensitization, Skin]P261, P272, P280, P302+P352, P321, P333+P317, P362+P364, and P501 (click each P-code to see the statement)The GHS information provided by 1 company from 1 notification to the ECHA C&L Inventory.
Regulatory informationChemical: L-Leucine, methyl ester
Other safety informationEvaluation - Chemicals not considered for in depth evaluation - Not commercially active in Australia
Hazard Classes and CategoriesSkin Sens. 1 (100%)
TSCA inventory statusTSCA listed
Signal wordWarning
GHS pictogramGHS07
GHS hazard statementsH315-H319-H335
GHS precautionary statementsP261-P305+P351+P338

Applications & Uses

Uses

Methyl L-leucinate, methyl ester of L-leucine, is an alpha-amino acid ester. Methyl L-leucinate is a derivative of methyl ester and L-leucine, a class of compounds containing both amino and carboxyl groups in the molecule[1].