Keywords

• DL-Gln
• 2,5-Diamino-5-oxopentanoic acid
• DL-Glutamine

Quick Details

• ProName: DL-Glutamine 585-21-7
• CasNo: 585-21-7
• Molecular Formula: C5H10N2O3
• Appearance: White
• Application: Chemicals
• DeliveryTime: 7-10 working days
• PackAge: In plastic outside weave or according ...
• Port: port of Qingdao、port of Tianjin
• ProductionCapacity: 500 Kilogram/Week
• Purity: >99%
• Storage: -15°C
• Transportation: We ship goods via DHL, Fedex, UPS, TNT...
• LimitNum: 1 Kilogram
• Shelf Life: Two years

Superiority

Our Advantage 

Rich Experience 
Our products are sold all over Europe,North&South America, Sino-East, Asia and pacific area as well as Africa,we establish long term. 

Quality service 
Company cooperates with research institutes. We strictly control the process of raw materials up to finished product. 
  
24 hour service 
Quick and clear response to customers questions. Warm after sale service, we will help to solve the problems in your usage. 

High quality 
Dedicated to serving customers first, we provide reasonable prices, high quality products. 

Details

Our advantage:

1. High quality with competitive price:

1) Standard:BP/USP/EP/Enterprise standard

2) All Purity≥99%

3) We are manufacturer and can provide high quality products with factory price.

 2, Fast and safe delivery

1) Parcel can be sent out in 24 hours after payment.Tracking number available

2) Secure and discreet shipment.Various transportation methods for your choice.

3) Customs pass rate ≥99%

4) We have our own agent/remailer/distributor who can help us ship our products very fast and safe,

and we have stock in there for transferring.

Exam

Authoritative Data Verified Data

acidity

take this product, add water to dissolve and dilute the solution containing 20mg per lml, according to the law (General 0631) , pH value should be 4.8~5.8.

transmittance of solution

take this product, dissolve and dilute with water to make a solution containing 25mg per lml, and measure the transmittance at 430nm by UV-visible spectrophotometry (General rule 0401), not less than 98.0%.

chloride

take 0.30g of this product and check it according to law (General rule 0801). Compared with the control solution made of 6.0ml of standard gasification sodium solution, it should not be more concentrated (0.02%).

sulfate

take 0.70g of this product and check it according to law (General rule 0802). Compared with the control solution made of 0.02% of standard potassium sulfate solution, it should not be more concentrated ().

ammonium salt

take 0.10g of this product, vacuum distillation below 60°C, check according to law (General rule 0808), compared with the control solution made of 0.10% of standard ammonium chloride solution, not deeper ().

Related substances

take an appropriate amount of this product, accurately weigh, add water to dissolve and quantitatively dilute to make a solution containing about 2.5mg per lml, as a test solution; Precision weigh the glutamine reference substance, an appropriate amount of each of the glutamic acid control and pyroglutamic acid control was placed in the same measuring flask, and water was added to dissolve and quantitatively dilute to prepare a mixed solution each containing about 12.5ug per 1 ml as a reference solution. According to the test of high performance liquid chromatography (General rule 0512), silica gel bonded with eighteen alkyl silane was used as filler; Sodium octane sulfonate solution (0.865g of sodium octane sulfonate was dissolved by adding 0.5 of water, of phosphoric acid was added and mixed uniformly)-Acetonitrile (95:5) as mobile phase; The detection wavelength was 210Nm. 100 of the reference solution is injected into the human liquid chromatograph, and the chromatographic system is adjusted. The pyroglutamic acid peak, glutamine peak and glutamic acid peak are sequentially released, and the separation degree between peaks shall meet the requirements. The LOLs of the test solution and the reference solution were respectively injected into the human liquid chromatograph, and the chromatogram was recorded to 2 times of the retention time of the glutamine peak. In the chromatogram of the test solution, if there are any chromatographic peaks with the same retention time of pyroglutamic acid peak and glutamic acid peak in the chromatogram of the reference solution, the peak area shall be calculated according to the external standard method, and neither pyroglutamic acid nor glutamic acid shall exceed 0.5%.; Other single impurities shall be calculated based on the glutamine peak area in the chromatogram of the reference solution, and shall not exceed 0.5%, and the sum of other impurities shall not exceed 1.0%. Peaks in the chromatogram of the test solution that were 0.1 times smaller than the area of the glutamine peak in the control solution were ignored.

loss on drying

take this product, dry at 105°C for 3 hours, loss of weight shall not exceed 0.30% (General rule 0831).

ignition residue

take l.Og of this product and check it according to law (General rule 0841). The residue left shall not exceed 0.1%.

Iron Salt

take l.Og of this product and check it according to law (General rule 0807). Compared with the control solution made of 1.0 ml of standard iron solution, it shall not be deeper (0.001%).

Heavy metals

take l.Og of this product, add 23ml of water to dissolve, add 2ml of acetate buffer (pH 3.5), and check according to law (General rule 0821 first law), containing heavy metals not more than 10 parts per million.

arsenic salt

take 2.0g of this product, add 23ml of water to dissolve, add 5ml of hydrochloric acid, check according to law (General rule 0822 first law), should comply with the provisions (0.0001%).

pyrogen

This product is dissolved and diluted with sodium chloride injection to make a solution containing 10mg per 1 ml. The pH value is adjusted to 7 with sodium hydroxide solution and checked according to law (General rule 1142), dose according to the rabbit body weight every 1kg injection 10ml, should meet the requirements. (For injection)

Glutamine Capsules

Authoritative Data Verified Data

This product contains glutamine (C5H10N203) should be labeled the amount of 90.0% to 110.0%.

trait

The content of this product is white or white particles.

identification

1. take an appropriate amount of the content of this product (about equivalent to 1g of glutamine), add 50ml of water, dissolve and filter, take 5ml of filtrate, add 5 drops of dilute hydrochloric acid and 1 ml of sodium nitrite solution, and foam.
2. take an appropriate amount of the content of this product (about equivalent to glutamine O.lg), add 100ml of water, dissolve, filter, take 5ml of filtrate, add 1ml of ninhydrin test solution, heat for 3 minutes, the solution shows purple color.
3. in the chromatogram recorded under the content determination item, the retention time of the main peak of the swab solution should be consistent with the retention time of the main peak of the reference solution.

examination

• the contents under the item of difference in loading amount of related substances should be mixed uniformly, and the appropriate amount (equivalent to 250mg of glutamine) should be accurately weighed, water was added to dissolve and quantitatively diluted to prepare a solution containing about 2.5mg of glutamine per 1 ml, filtered, and the filtrate was taken as a test solution. According to the method under the item of glutamine related substances, the inspection shall be in accordance with the provisions of D
• loss on drying: take an appropriate amount of the contents of this product, dry to constant weight at 105°C, and lose no more than 0.4% of the weight (General rule 0831).
• the dissolution of this product, according to the dissolution and release determination method (General rule 0931 The first method), water 500ml as the dissolution medium, the speed of 50 rpm, according to the law, after 30 minutes, the appropriate amount of the solution was filtered, and the filtrate was taken as the test solution, water was added to dissolve and quantitatively diluted to prepare a solution containing about 0.5mg per 1 ml as a control solution. 20 u1 of each of the test solution and the reference solution are accurately measured, and the dissolution amount of each particle is calculated according to the method under the content determination item. The limit is 80% of the labeled amount and shall be in accordance with the provisions.
• others should comply with the relevant provisions under the capsule (General 0103).

Content determination

• measured by high performance liquid chromatography (General 0512).
• chromatographic conditions and system suitability test using eighteen alkyl silane bonded silica gel as filler; Sodium octane sulfonate solution (0.865g of sodium octane sulfonate, dissolved in 1000ml of water, phosphoric acid 0.5mK mixed with acetonitrile (95:5) mobile phase; The detection wavelength was 2 l0mn. Take 50mg of the content of this product, add water to dissolve and dilute to 10ml, put water bath heating for 20 minutes, filter, take the filtrate as the system applicable solution, take 20u1 injection human liquid chromatograph, record the chromatogram, the degree of separation of glutamine peak and adjacent impurity peak shall meet the requirements.
• determination of content under the item of loading difference, mixing, fine, precision weighing appropriate amount, dissolved and diluted with water to make a solution containing about 0.5mg of glutamine per 1 ml, filtering, the continued filtrate was taken as the test solution. 20u1 was injected into the liquid chromatograph accurately, and the chromatogram was recorded. The appropriate amount of glutamine reference substance was weighed accurately, dissolved with water and quantitatively diluted to make a solution containing about 0.5mg per 1 ml, which was determined by the same method. According to the external standard method to calculate the peak area, that is.

Product Packaging：

1) 1kg/bag (1kg net weight, 1.1kg gross weight, packed in an aluminum foil bag)

2) 25kg/drum (25kg net weight, 28kg gross weight; Packed in a cardboard-drum with two plastic-bags inside; Drum Size: 510mm high, 360mm diameter)

 Storage：

Stored in a cool and dry well-closed container. Keep away from moisture and strong light/heat.

Delivery：

Usually within3-5 working days after full payment.

transport：

EMS,DHL, TNT, UPS ,FEDEX, BY AIR, BY SEA

DHL Express, FedEx and EMS for quantity less than 50KG, usually called as DDU service; 

Sea shipping for quantity over 500KG; And air shipping is available for 50KG above;

For high value products, please select air shipping and DHL express for safe;

Our Service:
1. Fast Delivery: We can delivery within 24 hours upon receipt of your payment.
2. Quality can be promised. Hot sell to Worldwide.
3. Payment Terms: T/T,, t/t
4. Free Sample available at any time.
5. Tracking your order at any time. Inform your order's further new situation at any time.
6. Package: Professional packing with professional materials.

Packing:  
  1. Inner double plastic bags----25kg/Fiber drum (35*35*45cm, GW: 28kg, NW: 25kg); 

  2. Inner double plastic bags----5kg/Aluminum foil bag (GW: 6.5kg, NW: 5kg). 

  3. Inner double plastic bags----1kg/Aluminum foil bag (GW: 1.5kg, NW: 1kg). 

P.S.: we accept packaging customization. 

  
Delivery:   

  1. Stock products are normally shipping within 3 working days.  

  2. For rush delivery, please contact our sales team for particular arrangement. 

Shipping Details: 
  1. We ship goods via DHL, Fedex, UPS, TNT, China post, NL Post and other couriers, weight from 10g to 1000kg or even bulker. 

  2. Shipping details & shipping documents will be provided and sent by email. 

  3. We keep tracking the shippment until clients well received. 

  4. After years export shipping experience, with professional and experienced cooperated forwarders, we ensure that goods can be delivered in multiple ways safetly and efficiently. 

About us

Our company specializes in processing and selling chemical raw materials, chemical products, pharmaceutical intermediates, veterinary medicine intermediates, dye intermediates, pigments, cosmetics raw materials and chemical reagents,  

We have compalete sales and service team , information feedback vertical integration of a sound marketing network, products are sold throughout the country and exported to South Asia, Europe, America, Africa and other more than 20 countries and regions.  

Companies adhering to the "pursuit of quality, innovation and development" business philosophy, to serve as a foundation, for the survival by the quality, seek development by science and technology, adhere to quilty comes first,fair price,good sense of customer service and responsibility. in the future hebei Nengqian import and export trade Co.,Ltd will always hold "integrity, innovation" business philosophy, to achieve honesty management, on the way of specialization, internationalization,  Keep moving!  

FAQ: 
1. Are you a trade company or factory   
We are a  factory with our own trading company.  

2.How do you control the quality   
Our factory is equipped with professional technicians to control quality, out inspectors take sample for testing every 2 hours to ensure the quality of our production. We also accept BV, SGS or any other Third-party inspection.   

3. How long is lead time   
We deliver goods within 3 days for small order, 7-10 days for bulk order.   

4. Where is your factory located  How can I visit the factory   
 Our factory located in HEBEI, China.

5. Can i get some samples  
  Yes, we can supply free sample, but the shipping cost be paid by our customers. 

6. How to start orders or make payments  
  Proforma invoice will be sent first after confirmation of order, enclosed our bank information.Payment by T/T,  

7. How to confirm the Product Quality before placing orders  
  You can get free samples for some products,you only need to pay the shipping cost or arrange a courier to us and take the samples. 
  You can send us your product specifications and requests,we will manufacture the products according to your requests. 

8. How long is lead time

We deliver goods within 3 days for small order, 7-10 days for bulk order.

9. How do you treat quality complaint

  First of all, our quality control will reduce the quality problem to near zero. If there is a realquality problem caused by us, we will send you free goods for replacement or refund your loss.