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DL-Leucine

Product Name
DL-Leucine
CAS No.
328-39-2
Chemical Name
DL-Leucine
Synonyms
DL-LEU;H-DL-LEU-OH;NSC 9252;DL-Leucin;ucine, dl;DL-Leu-OH;leucine,dl;DL-LEUCINE;Leucine, DL-;(RS)-Leucine
CBNumber
CB4365169
Molecular Formula
C6H13NO2
Formula Weight
131.17
MOL File
328-39-2.mol
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DL-Leucine Property

Melting point:
293-296 °C (subl.) (lit.)
alpha 
[α]D20 -3.0～+3.0゜ (c=4, HCl)
Boiling point:
225.8±23.0 °C(Predicted)
Density 
1,293 g/cm3
refractive index 
1.4630 (estimate)
storage temp. 
Keep in dark place,Inert atmosphere,Room temperature
solubility 
1 M HCl: soluble
form 
Fine Crystalline Powder
pka
pKa: 9.744(25°C)
color 
White
Odor
wh. sm. cryst. or cryst. powd., odorless, sl. bitter taste
Water Solubility 
soluble
Merck 
14,5451
BRN 
636005
Stability:
Stable. Incompatible with strong oxidizing agents.
LogP
0.799 (est)
CAS DataBase Reference
328-39-2(CAS DataBase Reference)
NIST Chemistry Reference
DL-Leucine(328-39-2)
EPA Substance Registry System
Leucine (328-39-2)
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Safety

Hazard Codes 
Xn
Safety Statements 
22-24/25-36
WGK Germany 
3
TSCA 
Yes
HS Code 
29224995
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
L7875
Product name
DL-Leucine
Purity
≥99% (HPLC)
Packaging
25g
Price
$65.6
Updated
2024/03/01
Sigma-Aldrich
Product number
8.14986
Product name
DL-Leucine
Purity
for synthesis
Packaging
50g
Price
$111
Updated
2024/03/01
TCI Chemical
Product number
L0028
Product name
DL-Leucine
Purity
>98.0%(T)
Packaging
25g
Price
$29
Updated
2024/03/01
Alfa Aesar
Product number
A10590
Product name
DL-Leucine, 99%
Packaging
50g
Price
$52.65
Updated
2024/03/01
Alfa Aesar
Product number
A10590
Product name
DL-Leucine, 99%
Packaging
250g
Price
$182.65
Updated
2024/03/01
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DL-Leucine Chemical Properties,Usage,Production

Chemical Properties

White crystalline powder

Uses

DL-Leucine is a racemic mixture of the D- and L- enantiomers of Leucine. DL-Leucine is used to form benzimidazole and pyrimidine hydroxy azo dyes with various transition metals. DL-Leucine may be used for the evaluation of chiral amino acid separation techniques.

DL-Leucine is used for the following applications:

  • Used as a standard for the measurement of free amino acids
  • Used in the process of tritiated leucine uptake
  • Used in solution preparation (various organics were used in different combinations and concentrations to model complex surface tension effects, DL-Leucine is one of them). It is chosen due to its presence in atmospheric aerosols and ice nucleation activity as well as for its surfactant character

Definition

ChEBI: A branched-chain amino acid that consists of glycine in which one of the hydrogens attached to the alpha-carbon is substituted by an isobutyl group.

DL-Leucine Preparation Products And Raw materials

Raw materials

SODIUM HYPOBROMITE Carbon dioxide alfa-Bromoisovalericacid Concentrated sulfuric acid

Preparation Products

D-2-Amino-4-methylpentanoic acid
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DL-Leucine Suppliers

Americas 1 Austria 1 Belgium 3 China 314 Europe 3 France 2 Germany 11 India 7 Japan 9 Poland 1 Slovakia 1 South Korea 1 Switzerland 3 United Kingdom 13 United States 62 USA 1 Global 433
TOKYO CHEMICAL INDUSTRY CO., LTD.
Tel
03-36680489
Fax
03-3668-0520
Email
Sales-JP@TCIchemicals.com
Country
Japan
ProdList
28387
Advantage
80
Watanabe Chemical Industries, Ltd.
Tel
--
Fax
--
Email
inquiry@watanabechem.co.jp
Country
Japan
ProdList
1918
Advantage
50
YONEYAMA YAKUHIN KOGYO CO.,LTD.
Tel
--
Fax
--
Email
inquiry@yone-yama.co.jp
Country
Japan
ProdList
219
Advantage
58
Yoneyama Yakuhin Kogyo Co., Ltd
Tel
--
Fax
--
Country
Japan
ProdList
13
Advantage
58
Watanabe Chemical Industries, Ltd.
Tel
--
Fax
--
Country
Japan
ProdList
4811
Advantage
42
UBE Industries
Tel
--
Fax
--
Email
shinki@utec.ube-ind.co.jp
Country
Japan
ProdList
163
Advantage
77
Kanto Chemical Co., Inc.
Tel
--
Fax
--
Email
reag-info@gms.kanto.co.jp
Country
Japan
ProdList
6756
Advantage
74
Junsei Chemical Co., Ltd.
Tel
--
Fax
--
Email
shiyaku@junsei.co.jp
Country
Japan
ProdList
3096
Advantage
46
Wako Pure Chemical Industries, Ltd.
Tel
--
Fax
--
Email
labchem-tec@wako-chem.co.jp
Country
Japan
ProdList
6819
Advantage
80
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View Lastest Price from DL-Leucine manufacturers

Hebei Zhuanglai Chemical Trading Co.,Ltd
Product
DL-Leucine 328-39-2
Price
US $65.00/kg
Min. Order
1kg
Purity
99%
Supply Ability
5000kg/week
Release date
2024-05-27
Hebei Weibang Biotechnology Co., Ltd
Product
DL-Leucine 328-39-2
Price
US $0.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
500000kg
Release date
2024-10-28
Hebei Yanxi Chemical Co., Ltd.
Product
DL-Leucine 328-39-2
Price
US $20.00-1.00/kg
Min. Order
1kg
Purity
0.99
Supply Ability
20 tons
Release date
2023-09-22

328-39-2, DL-LeucineRelated Search:

L-Leucine DL-Ornithine hydrochloride DL-Homoserine DL-Histidine DL-Pyroglutamic acid DL-Arginine hydrochloride monohydrate DL-Cysteine DL-tert-Leucine allo-DL-Threonine 2-amino-3-(1H-indol-3-yl)propanamide 4-HYDROXYMANDELIC ACID MONOHYDRATE DL-Cysteine hydrochloride DL-Glutamine N-Cbz-L-Leucine DL-2-AMINO-3-METHYLPENTANOIC ACID GLYCYL-DL-LEUCINE Ammonia 4-Methylvaleric acid

  • (R,S)-2-Amino-4-methyl-pentanoicacid
  • 2-Amino-4-methylvalericacid
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  • DL-LEUCINE BIOSYNTH
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  • (RS)-Leucine
  • Leucine (9CI)
  • Leucine, DL- (8CI)
  • NSC 9252
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  • Amino-4-methylvaleric acid
  • ucine, dl
  • DL-α-Aminoisocaproic acid
  • rac-(2R*)-4-Methyl-2-aminovaleric acid
  • H-DL-LEU-OH
  • DL-A-AMINO-G-METHYLVALERIC ACID
  • DL-A-AMINOISOCAPROIC ACID
  • DL-2-AMINO-4-METHYLPENTANOIC ACID
  • DL-2-AMINO-4-METHYLVALERIANIC ACID
  • DL-2-AMINO-4-METHYLVALERIC ACID
  • DL-LEUCINE
  • DL-LEU
  • (2R)-2-ammonio-4-methylpentanoate
  • rac-(R*)-2-Amino-4-methylpentanoic acid
  • DL-Leucine, Crystal
  • ALPHA-AMINO-ISO-CAPROIC ACID
  • (+/-)-AMINO-4-METHYLPENTANOIC ACID
  • DL-Leucine, 99+% 25GR
  • Leucin-Radikal
  • DL-LEUCINE FOR SYNTHESIS 250 G
  • DL-LEUCINE FOR SYNTHESIS 50 G
  • DL-Leucine 0.1
  • DL-Leucine Vetec(TM) reagent grade, 99%
  • DL-Leucine≥ 98.5% (Assay)
  • DL-Leu-OH
  • DL-LEUCINE, VETEC
  • DL-Leucine, 98%, for bio
  • DL-Leucine&gt
  • DL-2-Aminmo-4-methylvalerianic acid
  • DL-Leucine USP/EP/BP
  • dextro,laevo-leucine
  • CAS328-39-2 DL-2-Amino-4-methylpentanoic acid
  • (±)-Leucine (DL-Leucine)
  • C14629300 DL-Leucine
  • Glycerol Impurity 104
  • 328-39-2
  • Amino Acid Derivatives
  • Specialty Synthesis
  • Leucine
  • Peptide Synthesis
  • Leucine [Leu, L]
  • alpha-Amino Acids