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Periodic Table/Compounds/l-isoleucine

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© Melvin Olsson 2025–2026
Data: IAEA & PubChem

l-isoleucine

C₆H₁₃NO₂·131.170 g/mol·CID 6306

IUPAC: (2S,3S)-2-amino-3-methylpentanoic acid

Also known as: Isoleucine, 73-32-5, (2S,3S)-2-Amino-3-methylpentanoic acid, 2S,3S-Isoleucine, (S)-Isoleucine (+14 more)

2D structure of l-isoleucine

Molecular Structure

Molecular Propertiesmass · H-bonds · stereo

Molecular Weight

131.170g/mol

Exact Mass

131.094629Da

Monoisotopic Mass

131.094629Da

XLogP

-1.7

Polar Surface Area

63.3Ų

Complexity

103

Formal Charge

0

H-Bond Donors

2

H-Bond Acceptors

3

Rotatable Bonds

3

Heavy Atoms

9

Stereo Centers

2

Bond Stereo

0

Drug-Likeness (Lipinski's Rule of Five)

✓ 131.2 g/mol
MW ≤ 500
✓ -1.7
LogP ≤ 5
✓ 2
H-bond donors ≤ 5
✓ 3
H-bond acceptors ≤ 10

Passes all rules — good oral bioavailability predicted

Chemical IdentifiersSMILES · InChI

InChI

InChI=1S/C6H13NO2/c1-3-4(2)5(7)6(8)9/h4-5H,3,7H2,1-2H3,(H,8,9)/t4-,5-/m0/s1

Isomers8 compounds with formula C₆H₁₃NO₂

2D structure of (2S)-2-amino-4-methylpentanoic acid

(2S)-2-amino-4-methylpentanoic acid

CID 6106 · 131.2 g/mol

2D structure of 6-aminohexanoic acid

6-aminohexanoic acid

CID 564 · 131.2 g/mol

2D structure of (2R)-2-amino-4-methylpentanoic acid

(2R)-2-amino-4-methylpentanoic acid

CID 439524 · 131.2 g/mol

2D structure of (2S,3R)-2-amino-3-methylpentanoic acid

(2S,3R)-2-amino-3-methylpentanoic acid

CID 99288 · 131.2 g/mol

2D structure of (2S)-2-aminohexanoic acid

(2S)-2-aminohexanoic acid

CID 21236 · 131.2 g/mol

2D structure of 2-amino-3-methylpentanoic acid

2-amino-3-methylpentanoic acid

CID 791 · 131.2 g/mol

2D structure of 2-morpholin-4-ylethanol

2-morpholin-4-ylethanol

CID 61163 · 131.2 g/mol

2D structure of (2S)-2-azaniumyl-4-methylpentanoate

(2S)-2-azaniumyl-4-methylpentanoate

CID 7045798 · 131.2 g/mol

External Resources

PubChem ↗Wikipedia ↗