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Molecule
Leucine
CAS: 61-90-5 · C6H13NO2
2D Structure
3D Structure
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Basic Information
- CAS Registry Number
- 61-90-5
- Molecular Formula
- C6H13NO2
- Molecular Mass
- 131.18 g/mol
Identifiers
CAS Registry Number
61-90-5
SMILES
CC(C)C[C@H](N)C(=O)O
InChI Key
ROHFNLRQFUQHCH-YFKPBYRVSA-N
InChI
InChI=1S/C6H13NO2/c1-4(2)3-5(7)6(8)9/h4-5H,3,7H2,1-2H3,(H,8,9)/t5-/m0/s1
Names and Synonyms
- Leucine Common Name
- L-Leucine Synonym
- Leucine, L- Synonym
- Leucine Synonym
- Pentanoic acid, 2-amino-4-methyl-, (S)- Synonym
- Leu Synonym
- (S)-2-Amino-4-methylvaleric acid Synonym
- (S)-(+)-Leucine Synonym
- (S)-2-Amino-4-methylpentanoic acid Synonym
- (S)-Leucine Synonym
- L-α-Aminoisocaproic acid Synonym
- L-(+)-Leucine Synonym
- L-Norvaline, 4-methyl- Synonym
- NSC 46709 Synonym
- (2S)-2-Amino-4-methylpentanoic acid Synonym
- L-2-Amino-4-methylpentanoic acid Synonym
- (2S)-2-Amino-4-methylpentanoic acid Synonym
- 1: PN: WO2020097235 SEQID: 238 claimed sequence Synonym
- 17: PN: WO2021055880 SEQID: 18 claimed protein Synonym
All Properties
Comprehensive physical and chemical properties
| Property | Value | Source |
|---|---|---|
| Molecular Mass | 131.18 g/mol | CAS Common Chemistry |
| 131.175 g/mol | RDKit | |
| Density | 1.14 g/cm³ | CAS Common Chemistry |
| 1.14 g/cm3 | CAS Common Chemistry | |
| Wikipedia Url | https://en.wikipedia.org/wiki/Leucine | CAS Common Chemistry |
| Canonical SMILES | O=C(O)C(N)CC(C)C | CAS Common Chemistry |
| InChI | InChI=1S/C6H13NO2/c1-4(2)3-5(7)6(8)9/h4-5H,3,7H2,1-2H3,(H,8,9)/t5-/m0/s1 | CAS Common Chemistry |
| InChI Key | InChIKey=ROHFNLRQFUQHCH-YFKPBYRVSA-N | CAS Common Chemistry |
| Melting Point | 293 °C | CAS Common Chemistry |
| Name | L-Leucine | CAS Common Chemistry |
| Heavy Atom Count | 9 | RDKit |
| Hydrogen Bond Acceptors | 2 | RDKit |
| Hydrogen Bond Donors | 2 | RDKit |
| Rotatable Bonds | 3 | RDKit |
| Aromatic Ring Count | 0 | RDKit |
| Topological Polar Surface Area | 63.32000000000001 Ų | RDKit |
| 63.32 Ų | RDKit | |
| LogP | 0.44439999999999996 | RDKit |
| 0.4444 | RDKit | |
| Molar Refractivity | 35.06619999999998 cm³/mol | RDKit |
| Ring Count | 0 | RDKit |
| Formal Charge | 0 | RDKit |
| Fraction Csp3 | 0.8333 | RDKit |
| 0.83 | chempirical lib | |
| Exact Mass | 131.094628656 g/mol | RDKit |
| Boiling Point | 122-134 °C @ 2-3 Torr | CAS Common Chemistry |
Spectral Data
NMR, IR, and Mass spectral data
Predicting NMR spectra...
10 ppm
9
8
7
6
5
4
3
2
1
0 ppm
| Shift (ppm) | Multiplicity | Integration | Assignment |
|---|
200 ppm
180
160
140
120
100
80
60
40
20
0 ppm
| Shift (ppm) | DEPT | Assignment |
|---|
Note: These NMR spectra are predicted computationally and may differ from experimental data. Predictions are based on chemical environment analysis.
External Resources
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MW = 131.18 g/mol; density = 1.140 g/mL. Edit any field — others recompute live.
Related
Related molecules
Other compounds with formula C6H13NO2.
