L-Leucine

L-Leucine

CAS No.: 61-90-5
Molecular Formula: C6H13NO2
Molecular Weight: 131.17
Phone :+8617860115079
WhatsApp :+8617860115079
Email :hualuliam@sdhualuchem.com
90c07ac899b1500ecead6a1c8c56591c
product description

L-leucine is one of the eight essential amino acids, and belonging to the aliphatic amino acids within twenty kinds of proteins. L-leucine and L-isoleucine and L-valine are called three branched chain amino acids. L-leucineLeucine and D-leucine are enantiomers . It is a white shiny hexahedral crystal or white crystalline powder at room temperature , Odorless, slightly bitter .


Chemical Properties
PropertyValue

Melting point

>300 °C (lit.)

Alpha

15.4 º (c=4, 6N HCl)

Boiling point

122-134 °C(Press: 2-3 Torr)

Bulk density

300-400kg/m3

Density

1,293 g/cm3

Vapor pressure

<1 hPa (20 °C)

Refractive index

1.4630 (estimate)

FEMA

3297 | L-LEUCINE

Fp

145-148°C

Storage temp.

2-8°C

Solubility

1 M HCl: 50 mg/mL

Form

Powder

Pka

2.328(at 25℃)

Color

White to Off-white

Odor

at 100.00?%. odorless

PH

5.5-6.5 (20g/l, H2O, 20℃)

Biological source

Plant

Optical Rotation

[α]20/D +15.5°, c = 2 in 6 M HCl

Water Solubility

22.4 g/L (20 C)

λmax

λ: 260 nm Amax: 0.05λ: 280 nm Amax: 0.05

JECFA Number

1423

Sublimation

145-148 ºC

Merck

14,5451

BRN

1721722

Stability

Stability Moisture and light sensitive. Incompatible with strong oxidising agents.

LogP

0.80

CAS DataBase Reference

61-90-5(CAS DataBase Reference)

NIST Chemistry Reference

Leucine(61-90-5)

EPA Substance Registry System

L-Leucine (61-90-5)


Safety Information

PropertyValue

Safety Statements

24/25

WGK Germany

3

RTECS

OH2850000

TSCA

Yes

HS Code

29224995

Hazardous Substances Data

61-90-5(Hazardous Substances Data)


Product Usage

L-Leucine is an essential branched-chain amino acid (BCAA) that plays a critical role in protein synthesis and muscle repair. Its primary application is in the sports nutrition and dietary supplement industry, where it is hailed as the most potent activator of the mTOR signaling pathway, directly stimulating muscle protein synthesis for athletes and bodybuilders. In the pharmaceutical sector, L-Leucine is used as a key component in parenteral nutrition (IV drips) and for treating liver diseases and muscle wasting conditions. In infant formula, it is an indispensable additive to support healthy growth and metabolic development. Furthermore, it serves as a specialized lubricant in the tableting process for the pharmaceutical and food industries, and as a starting material for synthesizing various flavorings and biochemical reagents.

Factory Showcase
拼图_美图设计室-(1)
Quality Control Lab
实验室
Shipping And Transportation

Delivery Time

Inventory 2-3 working days New manufacturing 7-10 working days

Mode of Transportation
1. By Air, fast but expensive.
2. By Sea, usual and economy.
3. By Train, suit for middle Asia countries.
4. By Express, suit for small package.
We only provide highest quality goods available, accompanied by after support!

拼图_美图设计室
Qualification Certificate
  • 微信图片_2026-04-22_130717_131
  • 微信图片_2026-04-22_130720_178
  • 微信图片_2026-04-22_130722_820
  • 微信图片_2026-04-22_130725_370
  • 微信图片_2026-04-22_130728_434
  • 微信图片_2026-04-22_130730_803
  • 微信图片_2026-04-22_130733_947
FAQ

Q1: What international standards do your products and services comply with?

A1: Our products fully comply with international standards such as REACH, MSDS, and COA, and we strictly implement the ISO9001 quality management system. We can also provide third-party testing reports (SGS, BV, etc.) according to customer needs.


Q2: How long does it take for goods to be delivered to my country?
A2: The delivery time depends on the transport mode and destination country. Generally, sea transport takes 15-30 days, air transport takes 3-7 days, and we will optimize the transport route to shorten the delivery time as much as possible.


Can you provide customs clearance services for dangerous chemicals?
A3: Yes. Our team is proficient in the customs clearance procedures for dangerous chemicals in various countries, and can provide professional compliant declaration and customs clearance services to ensure smooth customs clearance.


Q4: Do you provide customized product and service solutions?
A4: Yes. We can provide personalized product customization and export service solutions according to your specific needs (product specifications, application scenarios, procurement volume, etc.).

Contact Us
Submit
Recommendation