Leu-Leu dipeptide CAS : 3303-31-9 Youngshechem
2 Inquiries
3303-31-9
Chemical Grade
98%
Youngshe
1g/bottle ,5g/bottle, 10g/bottle or customization
Yes
2030-12-31
Cosmetic peptides,beauty raw materials,custom peptides,pharmaceutical intermediates
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Product Details
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Seller Information
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Inquiry History
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DescriptionECHEMI Editorial ReferenceWhite powder
Solid
Leu-Leu is a dipeptide formed from two L-leucine residues. It has a role as a human metabolite and a Mycoplasma genitalium metabolite. It derives from a L-leucine.Research & Reference NoteLeu-Leu dipeptide CAS : 3303-31-9 Youngshechem is listed on ECHEMI for industrial / laboratory sourcing. This listing is for industrial and laboratory research use. Product information on ECHEMI is provided for sourcing and specification reference. It is not medical advice, a clinical recommendation, or an approved therapy description. Always verify regulatory status, purity, and intended use with the supplier and applicable authorities before purchase or use.
Authoritative sourcesDisclaimer: This listing is for industrial and laboratory research use. Product information on ECHEMI is provided for sourcing and specification reference. It is not medical advice, a clinical recommendation, or an approved therapy description. Always verify regulatory status, purity, and intended use with the supplier and applicable authorities before purchase or use.
Reviewed by ECHEMI Scientific Review - Platform editorial review for research chemicals
Basic Info-
Product Name:
L-Leucyl-L-leucine
Other Name:L-Leucine,L-leucyl-;Leucine,N-L-leucyl-,L-;L-Leucine,N-L-leucyl-;Leucine,N-L-leucyl-;L-Leucyl-L-leucine;Leucylleucine;NSC 89185;456: PN: EP2071334 SEQID: 488 claimed protein;456: PN: WO2009077864 SEQID: 488 claimed protein;11: PN: US20090239809 SEQID: 11 claimed protein;38: PN: EP2161028 PAGE: 10 claimed protein;2: PN: CN101845080 PAGE: 2 claimed protein;L-Leucinyl-L-leucine;21: PN: WO2014134509 SEQID: 21 claimed sequence;2: PN: CN110655554 PAGE: 2 claimed sequence;10: PN: WO2020097235 SEQID: 239 claimed protein
CAS No.:3303-31-9
Molecular Formula:C12H24N2O3
InChIKeys:InChIKey=LCPYQJIKPJDLLB-UWVGGRQHSA-N
Molecular Weight:244.33
Exact Mass:244.33
EC Number:221-976-6
DSSTox ID:DTXSID00186696
Categories:
Characteristics-
PSA:
92.4
XLogP3:-1.5
Appearance:Solid
Melting Point:270 °C
Boiling Point:432.7°C at 760 mmHg
Hazard IdentificationClassification of the substance or mixture
no data available
GHS label elements, including precautionary statements
Pictogram(s) no data available Signal word no data available
Hazard statement(s) no data available
Precautionary statement(s) Prevention no data available
Response no data available
Storage no data available
Disposal no data available
Other hazards which do not result in classification
no data available
Handling and StoragePrecautions for safe handling
Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.
Conditions for safe storage, including any incompatibilities
Store the container tightly closed in a dry, cool and well-ventilated place. Store apart from foodstuff containers or incompatible materials.
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Seller Information
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Business Type:
Manufactory
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Main Products:
Cosmetic peptides,beauty raw materials,custom peptides,pharmaceutical intermediates
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Location:
Unit 12, Building 10, No.77, Tianmu Road, Gaoxin West District, Yi County, Chengdu City, Sichuan Province
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Payment Terms:
TT against copy of documents
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Average lead Time:
7 days
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Total Annual Revenue:
$1 million-$2.5 million
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Total Employees:
11-50
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Year of Establishment:
2015
Company Certificates-
![YoungsheISO9001]( "ISO9001")
ISO9001
Chengdu YoungShe Chemical Co., Ltd is a new and dynamic high-tech enterprise that is constantly innovating and specializing in the development of beauty peptides. The company is headquartered in Chengdu Hi-tech Development Zone. Since its establishment in early 2015, the company has launched hundreds of beauty peptide products with different functions, which are widely sold at home and abroad.
Chengdu Youngshe Chemical Co., Ltd.'s main cosmetic peptide products are dipeptide, tripeptide, tetrapeptide, pentapeptide, hexapeptide, and seven peptides ( heptapeptide, octapptide, nonapeptide, decapeptide, and oligopeptide.
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Inquiry History2 Inquiries
Country Product Purchase Quantity Date Posted 
Australia
N-L-leucyl-L-leucine H-LEU-LEU-OH
1 KG Mar 24, 2026 
Spain
N-L-leucyl-L-leucine
50 KG Sep 17, 2025 Post an enquiry for this product
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