ChemAbout

ChemAbout is a B2B platform where chemical buyers and suppliers discover each other.

Post a purchase requestList your products (for suppliers)
© 2026 ChemAbout
Compound Index|Demand Board|Insights|Exhibitions|Compliance|Help Center|Privacy Policy|Terms of Service|[email protected]
Home/Compounds/Research Reagent/Leu-Leu
C12H24N2O3
244.33 g/mol
Research Reagent

Leu-Leu

CAS3303-31-9EC221-976-6
Category
Research Reagent
Compound Class
Peptide
Primary Use
Research Compound

Leu-Leu is a dipeptide composed of two leucine amino acid residues. It is commonly used as a research compound in biochemical and pharmaceutical studies.

Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.

Sourcing Leu-Leu?

Post a free purchase request — no account needed. It reaches suppliers of this product, and replies go straight to your inbox.

Post a Purchase Request→Supplier? List your product for this CAS→

Related Compounds

ReferenceSame Category

Boc-beta-alanine

CAS3303-84-2

research compound

ReferenceSame Category

Urocortin II (mouse)

CAS330648-32-3

research compound

ReferenceSame Category

5-Bromo-2,2-difluorobenzodioxole

CAS33070-32-5

research compound

ReferenceSame Category

4-[[(3-Chloro-4-methoxyphenyl)methyl]amino]-2-[(2S)-2-(hydroxymethyl)-1-pyrrolidinyl]-5-pyrimidinecarboxylic acid ethyl ester

CAS330785-83-6

research compound

Related Reading

Therapeutic Peptides in 2026: This Year's Breakthroughs

2026 has been a concentrated year for peptide therapeutics. Efficacy reached a new high in late-stage trials, the obesity field moved beyond the incretins to amylin, the oral route reached weight management, and peptide-guided radioligand therapy kept advancing — each point tied to a specific 2025–2026 result.

Read more

Customs Tariff Classification

The international HS code for Leu-Leu (CAS 3303-31-9) is 2924.19.

HS code (international, 6-digit)

2924.19

EU CN code (8-digit)

2924 19 00

Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.

Identifiers
IUPAC Name

(2S)-2-[[(2S)-2-amino-4-methylpentanoyl]amino]-4-methylpentanoic acid

InChIKey

LCPYQJIKPJDLLB-UWVGGRQHSA-N

SMILES

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

Synonyms (15)
  • H-L-Leu-L-Leu-OH
  • H-LEU-LEU-OH
  • L-Leu-L-Leu
  • LL dipeptide
  • Leu-Leu
  • Leu-Leu-OH
  • Leucine Leucine dipeptide
  • Leucine, leucyl-
  • N-L-Leucyl-L-leucine
  • l-Leucyl-l-leucine

Sourcing Leu-Leu?

Post a free purchase request — no account needed. It reaches suppliers of this product, and replies go straight to your inbox.

Post a Purchase Request→Supplier? List your product for this CAS→