China China High Quality (17alpha)-3,3-[1,2-Ethanediylbis(Oxy)]-17-Hydroxy-19-Norpregna-5(10),9(11)-Diene-21-Nitrile Manufacturer - L-Leucine | 61-90-5 – COLORKEM Manufacturer and Supplier

China High Quality (17alpha)-3,3-[1,2-Ethanediylbis(Oxy)]-17-Hydroxy-19-Norpregna-5(10),9(11)-Diene-21-Nitrile Manufacturer - L-Leucine | 61-90-5 – COLORKEM

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China High Quality (17alpha)-3,3-[1,2-Ethanediylbis(Oxy)]-17-Hydroxy-19-Norpregna-5(10),9(11)-Diene-21-Nitrile Manufacturer - L-Leucine | 61-90-5 – COLORKEM Detail:

Products Description

Leucine (abbreviated as Leu or L) is a branched-chain α-amino acid with the chemical formula HO2CCH(NH2)CH2CH(CH3)2. Leucine is classified as a hydrophobic amino acid due to its aliphatic isobutyl side chain. It is encoded by six codons (UUA, UUG, CUU, CUC, CUA, and CUG) and is a major component of the subunits in ferritin, astacin and other ‘buffer’ proteins. Leucine is an essential amino acid, meaning that the human body cannot synthesize it, and it, therefore, must be ingested.

Specification

Item	Index
Specific rotatory power[α] D20	+14.9º 16º
Clarity	>=98.0%
Chloride[CL]	=<0.02%
Sulfate[SO4]	=<0.02%
Residue on ignition	=<0.10%
Iron salt[Fe]	=<10 ppm
Heavy metal[Pb]	=<10 ppm
Arsenic salt	=<1 ppm
Ammonium salt[NH4]	=<0.02%
Other amino acid	=<0.20%
Loss on drying	=<0.20%
Content	98.5 100.5%

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