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High Purity Cysteine And Cystine White Powder In Urine Sulfur Containing Amino Acid

Basic Information
Place of Origin: China
Brand Name: cysteine cystine
Certification: ISO
Model Number: cystine in urine
Minimum Order Quantity: 50kg
Price: Inquiry
Packaging Details: 1kg/bag,25kg/drum
Delivery Time: 3 work days
Payment Terms: T/T, Western Union, MoneyGram
Supply Ability: 5000kg per month
Detail Information
Name: Cysteine And Cystine CAS No.: 56-89-3
EINECS No.: 200-296-3 Melting Point: >240 °C
Boiling Point: 468.2±45.0 °C Other Name: Cysteine
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Product Description

Highest purity cysteine and cystine powder in urine with low price cas 56-89-3


Cystine Introduction

cas 56-89-3
Name L-Cystine
Appearance White powder
Application used


Cystine Function

1. Cystine is a crystalline, sulfur-containing amino acid, formed from two molecules of the amino acid cysteine.

2. It can be converted to cysteine by reduction and was discovered in 1810 but was not recognized as a component of proteins until 1899, when it was isolated from animal horn – it is particularly abundant in skeletal and connective tissues, hair and digestive enzymes.

3. L- Cystine helps strengthen the immune system, reduce damage from free-radicals, repair RNA-DNA in the cells and assimilation of vitamin B6. L-Cystine is closely related to the amino acid, L-Cysteine.

4. L-Cystine aids in preventing the side effects of chemotherapy and radiation.

5. It increases L-Glutathione levels in the lungs, liver, kidney and bone marrow.

6. L-Cystine also has an anti-aging effect on the body which can reduce the accumulation of age spots.


Cystine specification

Item Specification Results
Physical Property
Appearance White Powder Conforms
Odor Characteristic Conforms
General Analysis


Assay (Test by HPLC)

Loss on Drying

Identical to sample

99% - 101%





Specific Rotation +20.0 ~+22.0° Conforms
Ash ≤3.0% 0.68%
Lead (Pb) ≤3.0mg/kg 2.2
Arsenic (As) ≤2.0mg/kg 1.6
Cadmium (Cd) ≤1.0mg/kg 0.5
Mercury (Hg) ≤0.1mg/kg 0.06
Total Plate Count ≤1000cfu/g Conforms
Yeast&Mold ≤100cfu/g Conforms
E.Coli. Negative Conforms
Salmonella Negative Conforms

Contact Details

Phone Number : 86-15398038360

WhatsApp : +8615398038360