USD $10.00-90.00 / Kilogram
USD $1.00-10.00 / Kilogram
iso9001 certified manufacturer
quality: adopting fermentation technology to assure the high quality. no-animal raw material
price: offering the best price during the suppliers in china.
rich material and energe make us control the cost effectively
service: reponse inquiry in 24 hours. fast delivery
certificates:we can offer all kinds of certificates that you need for importing. such as: iso9001, gmp,kosher ,halal etc
l-leucine chemicalname isl-2-amino-3- (4 -hydroxyphenyl)propionic acid, cas no.: 61-90-5 molecule formula:c6h13no2 molecul…
description:
l-leucine
chemical name is l-2-amino-3 - (4 - hydroxyphenyl) propionic acid,
cas no.: 61-90-5
molecule formula: c6h13no2
molecule weight: 131.17
property:
white glossy hexahedral crystals or white crystalline powder. slightly bitter taste (dl-leucine was sweet). sublimation at 145 ~ 148 ℃. melting point 293 ~ 295 ℃ (decomposition). in the presence of hydrocarbons, its stable in inorganic acid aqueous solution. each gram dissolves in about 40ml water or 100ml acetic acid. slightly soluble in ethanol (0.07%), dissolved in dilute hydrochloric acid, alkali hydroxide and carbonate solution. insoluble in ether.
an essential amino acid, adult male requirement (2.2g / d) (japan). necessary for normal growth of infants and for adults to maintain normal nitrogen balance
naturally exist in spleen and heart, in the form of the protein in a variety of animal and plant tissues.
applications:
nutritional supplements; flavoring agent.
preparation of amino acid infusion and comprehensive amino acid preparations, hypoglycemic agents and plant growth promoters.
specifications:
item |
specification( usp31) |
results |
description |
white crystals or crystalline powder,
powdercrystalline |
conforms |
identification |
as per usp30 |
conforms |
specific rotation [α]d20 |
+14.9°to +17.3° |
+15.7° |
chloride(cl) |
not more than 0.05 % |
less than 0.05% |
sulfate(so4) |
not more than 0.03% |
less than 0.02% |
iron(fe) |
not more than 30ppm |
less than 30ppm |
arsenic |
not more than 1.0ppm |
less than 1ppm |
heavy metals(pb) |
not more than 15ppm |
less than 15ppm |
loss on drying |
not more than 0.2% |
0.12% |
residue on ignition (sulfated) |
not more than 0.4 % |
0.09% |
ph |
5.5 to 7.0 |
6.0 |
assay |
98.5% to 101.5% |
99.6% |