L-Leucine

Leucine is one of three branched-chain amino acids (the others are valine and isoleucine) that enhance energy, increase endurance, and aid in muscle tissue recovery and repair. L-Leucine is an essential amino acid and works with isoleucine and valine to protect muscle and act as fuel. This group also lowers elevated blood sugar levels and increases growth hormone production. Supplemental valine should always be combined with isoleucine and valine at a respective milligram ratio of 2:1:2.

L-leucine is an essential branched-chain amino acid important for hemoglobin formation.

Description: White crystals or crystalline powder , slightly bitter taste.

Synonyms: (2S)-α-2-amino-4-methylvaleric acid , L , leu , leucine, 2-amino-4-methylvaleric acid , (2S)-α-leucine
Molecular formula: C6H13NO2
Molecular Weight: 131.17
CAS NO.: 56-89-3

Specifications:

Item	AJI92	USP24	FCC4
Assay	99.0 ~ 100.5 %	98.5 ~ 101.0 %	98.5 ~ 101.0 %
PH	5.5 ~ 6.5	5.5 ~ 7.0	5.5 ~ 7.0
Specific rotation[a] D 20º	+14.9º~ +16.0º	+14.9º~ +17.3º	+14.5º~ +16.0º
Transmittance (T 430 )	98.0 % min.
Chloride(CI)	0.020 % max.	0.05% max.
Ammonium(NH 4 )	0.02 % max.
Sulfate(SO 4 )	0.020 % max.	0.03% max.
Iron(Fe)	10ppm max.	30ppm max.
Heavy metals	10ppm max.	15ppm max.	20ppm max.
Arsenic	1ppm( AS 2 O 3 ) max.	1.5ppm(As) max.
Other amino acids
Loss on drying	0.20 % max.	0.2 % max.	0.20 % max.
Residue on ignition	0.10 % max.	0.3 % max.	0.10 % max.
Organic volatile impurities		Conforms