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Fixed Competitive Price Plant Extract - L-Phenylalanine CAS:63-91-2 99% White powder – XD BIOCHEM

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Fixed Competitive Price Plant Extract - L-Phenylalanine CAS:63-91-2 99% White powder – XD BIOCHEM Detail:

Catalog Number XD90317
Product Name L-Cysteine hydrochloride anhydrous
CAS 63-91-2
Molecular Formula C9H11NO2
Molecular Weight 165.19
Storage Details Ambient
Harmonized Tariff Code 29224985

 

Product Specification

Appearance White crystalline powder
Assay 99%
Specific rotation -20.4 to -35.2
Heavy metals <0.002%
Lead <10mg/kg
pH 5.4 – 6
Loss on Drying <0.40%
Residue on Ignition <0.10%

 

In maple syrup urine disease (MSUD), branched-chain L-amino (BCAA) and 2-oxo acids (BCOA) accumulate in body fluids owing to an inherited deficiency of branched-chain 2-oxo acid dehydrogenase complex activity. In MSUD, little information is available on the significance of urinary disposal of branched-chain compounds. We examined the renal clearance of leucine, valine, isoleucine and alloisoleucine, and their corresponding 2-oxo acids 4-methyl-2-oxopentanoate (KIC), 3-methyl-2-oxobutanoate (KIV), (S)-(S-KMV), and (R)-3-methyl-2-oxopentanoate (R-KMV), using pairs of plasma and urine samples (n = 63) from 10 patients with classical MSUD. The fractional renal excretion of free BCAA was in the normal range (< 0.5%) and independent of the plasma concentrations. The excretion of bound (N-acylated) BCAA was normal and not significantly dependent on the BCAA plasma concentrations. The fractional renal excretion of BCOA was in the order KIC << KIV < R-KMV < or = S-KMV (range (%): KIC 0.1-25; KI V 0.14-21.3; S-KMV 0.26-24.6; R-KMV 0.1-35.9), significantly correlated with the KIC plasma concentrations, and generally higher than that of the related BCAA. The results show that the renal excretion of free BCAA as well as of the acylated derivatives is negligible. The renal excretion of BCOA, however, to some extent counteracts increases in BCAA concentrations and thus contributes to the lowering of total BCAA pools in MSUD.

 


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We've one of the most innovative manufacturing devices, experienced and qualified engineers and workers, recognized good quality handle systems and also a friendly experienced income team pre/after-sales support for Fixed Competitive Price Plant Extract - L-Phenylalanine CAS:63-91-2 99% White powder – XD BIOCHEM , The product will supply to all over the world, such as: Mumbai, Indonesia, Sierra Leone, We welcome an opportunity to do business with you and hope to have pleasure in attaching further details of our products. Excellent quality, competitive price, punctual delivery and dependable service can be guaranteed. For further inquires please do not hesitate to contact us.
  • The sales manager is very patient, we communicated about three days before we decided to cooperate, finally, we are very satisfied with this cooperation!
    5 Stars By Naomi from Irish - 2017.08.15 12:36
    The customer service staff's answer is very meticulous, the most important is that the product quality is very good, and packaged carefully, shipped quickly!
    5 Stars By Miriam from Pakistan - 2018.11.02 11:11
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    Fixed Competitive Price Plant Extract - L-Phenylalanine CAS:63-91-2 99% White powder – XD BIOCHEM