Hebei Nengqian Chemical Import and Export Co., LTD
Assessed Supplier Enterprise Certification
- Assessed
Supplier - 4th
years
Assessed Supplier Enterprise Certification
Product Certification&
Enterprise Certification
Country: 
China (Mainland)
Business Type:Trading Company
Tel: 86-139-10575315
Tel: +86 15632961819
Tel: +86 18233902561
Tel: +86 15717685612
Tel: +86 16630923639
Tel: +86 18732968538
Tel: +86 18833033983
Tel: +86 19831957301
Mobile: +86 19831957301
Tel: 86-139-10575315
Fax: 4001020630
URL: https://www.nengqianchemical.com/
Province/state: Hebei
City: Handan
Street: Congtai District, La Defense North
MaxCard:
Ms.AnnaCAS NO.122628-50-6
Pharmaceutical grade(1-25)Kilogram Pharmaceutical grade(25-50)Kilogram
With our good experience, we offer detailed technical support and advice to assist customers. We communicate closely with customers to establish their quality requirements.
Consistent Quality
Our plant has strict quality control in each manufacturing process. Guaranteed.
Meanwhile all the materials are tested before each shipment in our laboratory to double confirm the quality.
Most competitive pricing
Our company is committed to the production and development of titanium dioxide, we always offer the most competitive pricing to customers to help lower their cost in application.
Shortest delivery time
90% of orders are shipped within 7-10 days after receipt of the prepayment or workable L/C.
Respond in 24 hours to inquiry, feedback or other requirements
Our experienced staff is dedicated to answer all of your inquires, feedback or other requirements in 24 hours.
We welcome you to contact us for more information and look forward to working with yo
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,
Our company has a number of sales team, service and 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!
Our company's strengths：
1.Our products are superior in quality and competitive in price
2. Standard: BP/USP/EP/ enterprise standard
All purities ≥99%
3. Fast and safe delivery and careful delivery, a variety of transportation modes for your choice of service.A clearance rate of 99% or higher
| Product Name | Pyrroloquinoline quinone(PQQ) |
| Chemical name | Pyrroloquinoline quinone(PQQ) |
| CAS | 72909-34-3 |
| Molecular formula | C14H6N2O8 |
| Molecular weight | 330.21 |
| Appearance | Reddish orange to reddish brown powder |
| Package | 500Gram /1Kg /Tin or As per your request |
| Storage | Store in cool and dry places ,keep away from strong light |
| Shelf life | 2 Years when properly stored |
| Safety | Non-toxic, non-stimulating, safe and reliable |
The scientific name of the PQQ pyrroloquinoline quinone (PQQ) pyrroloquinoline quinone is a new prosthetic group, is the second flavin nucleotides (FMN, FAD) and nicotinamide nucleotide (MAD NADP) in the membrane boundfound in the bacterial dehydrogenase third cofactor, the world's medical profession called fourteenth vitamins. The compound was first isolated from bacteria out, and then moving the plants have also been found, its chemical name is 4,5 - dihydro-4 ,5 - dioxide -1 - pyrrolo (2,3 f) The quinone -2,7,9-tricarboxylic acid, also known as methaxatin.
Function
Pyrroloquinoline quinone (henceforth pqq) is a small quinone molecule which has the ability to be a redox agent, capable of reducing oxidants (an antioxidant effect) and then being recycled by glutathione back into an active form. It appears to be quite stable as it can undergo several thousand cycles before being used up, and it is novel since it associates with protein structures inside the cell (some antioxidants, mostly notably carotenoids like β-carotene and Astaxanthin, are located at specific areas of a cell where they exert proportionally more antioxidant effects due to proximity; PQQ seems to do this near proteins like carotenoids do so at the cell membrane).
PQQ is present in nanomolar quantities in most foods and in most animal tissuse. It promotes growth, mitochondrial function, and development in vivo and stimulates cell proliferation and viability in culture. It is a potent antioxidant that scavenges superoxide and peroxinitrite. It is neuroprotectant against 6-hydroxydopamine-induced and hypoxia/ischemia-induced neurotoxicity. PQQ conjugates to α-synuclein in vitro, inhibiting the formation of amyloid fibrils.
Specification
| Item | Specification | Test Results |
| Appearance | Fine Powder | Conform |
| Color | Reddish Orange To Reddish Brown | Conform |
| Taste | Sour | Conform |
| Identification | Positive Match With Standard | Matches |
| Assay (Dry Basis) | ≥98% | 99.98% |
| Loss On Drying | ≤12% | 0.9% |
| Particle Size (Through 20 mesh) | ≥99% | >99% |
| Heavy Metals (As Pb) | ≤10ppm | <10ppm |
| Arsenic(As) | ≤1ppm | Not Detected |
| Lead (Pb) | ≤0.5ppm | Not Detected |
| Cadmium (Cd) | ≤1ppm | Not Detected |
| Mercury (Hg) | ≤0.1ppm | Not Detected |
| Aerobic Plate Count | ≤1000cfu/g | <10cfu/g |
| Moulds&Yeast Count | ≤100cfu/g | <10cfu/g |
| E.Coli | Negative | Negative |
| Salmonella | Negative | Negative |
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.
FAQ:
Q1:Will you supply samples for testing
A: Free samples for the quality evaluation for most products, but customers only need to undertake the shipping fee for delivery the samples to your door.
Q2:What's your MOQ
A: For the high value product, our MOQ starts from 10g,100g and 1kg.
Q3:Which kind of payment terms do you accept
A: Proforma invoice will be sent first after confirmation of order, enclosed our bank information. Payment by T/T, and BTC). Bulk order by T/T or L/C.
Q4:How about your delivery time
A: Generally, it will take 3 to 5 days after receiving your advance payment.
Q5:How do you treat quality complaint
A:First of all, our quality control will reduce the quality problem to near zero. If there is a real quality problem caused by us, we will send you free goods for replacement or refund your loss.