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Top Quality Gilead Sciences - L-Phenylalanine CAS:63-91-2 99% White powder – XD BIOCHEM

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Our company aims to operating faithfully, serving to all of our customers , and working in new technology and new machine constantly for Msds, N-(2-Aminoethyl)Morpholine, Dipso Sodium, We take quality as the foundation of our success. Thus, we focus on the manufacture of the best quality products. A strict quality management system has been created to ensure the quality of the products.
Top Quality Gilead Sciences - 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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The business keeps to the operation concept "scientific management, premium quality and efficiency primacy, customer supreme for Top Quality Gilead Sciences - L-Phenylalanine CAS:63-91-2 99% White powder – XD BIOCHEM , The product will supply to all over the world, such as: Dubai, Belgium, Serbia, We have our own registered brand and our company is developing rapidly owing to high quality products, competitive price and excellent service. We sincerely hope to establish business relations with more friends from home and abroad in the near future. We look forward to your correspondence.
  • We are a small company that has just started, but we get the company leader's attention and gave us a lot of help. Hope we can make progress together!
    5 Stars By Kevin Ellyson from Seychelles - 2018.08.12 12:27
    As a veteran of this industry, we can say that the company can be a leader in the industry, select them is right.
    5 Stars By Constance from Provence - 2017.04.28 15:45
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    Top Quality Gilead Sciences - L-Phenylalanine CAS:63-91-2 99% White powder – XD BIOCHEM