XANTHINE
CAS NO. : 69-89-6
MOLECULAR FORMULA: C5H4N4O2
MOLECULAR WEIGHT: 152.11
EINECS NO. : 200-718-6
APPEARANCE:WHITE TO OFF-WHITE CRYSTALLINE POWDER
DENSITY:1.5452 (ROUGH ESTIMATE)
| Inspection Items | Standard | Results |
| Appearance | Pale-yellow | Conforms |
| Loss on drying | ≤1% | 0.51% |
| Residue ignition | ≤0.2% | 0.13% |
| Heavy metal | ≤10ppm | Not Detected |
| Clear grade | Clear And Colorless | Conforms |
| Purity (HPLC) | ≥99% | 99.12% |
| Assay | ≥95% | 97.3% |
| Guanine | ≤1% | 0.7% |
Application
2,6-Dihydroxypurine, also called xanthine, is a compound formed by the fusion of a pyrimidine ring and an imidazole ring. It is a yellow flaky crystal, hardly soluble in water, alcohol, and easily soluble in hydroxide. Sodium is dissolved in solution. At pH6, there is maximum absorption at 267nm wavelength. There is no melting point for thermal decomposition. This product is soluble in water and acidic solution, slightly soluble in water and ethanol, insoluble in organic solvents.
Company Profile
Hebei Zhuanglai Chemical Trading Co.,Ltd. is a foreign trading company, specializing in developing and producing Chemical raw materials, pharmaceutical intermediates.It has its own factory, which procures itself a competitive edge in market.
For many years, our company has won many clients' support and trust because it always strives to make high-quality merchandise with favorable price. It commits itself to satisfy every clients, in return, our customer show great confidence and respect for our company. In spite of so many loyal customers won these years, Hegui keeps modest all the time and strives to better itself from every aspect.
We are looking forward to cooperating with you and having a win-win relationship with you. Please rest assured that we will satisfy you. Just feel free to contact me.
Packing & Shipping
FAQ
Q1. What is your delivery term and delivery period?
We accept FOB, CIF, etc. You can choose the one which is the most convenient or cost effective for you. Competitive price with ready stocks; by Air within 7days, by sea within 14 days shipping after .
Q2. What's your main markets?
South&North America, Europe, Asia, Africa etc. Top customers among more than 80 countries; 30 years history; One-stop supplier.
Q3. What is the payment term?
Normally we advise customers use Trade Assurance(is a free payment protection service for buyers is offered by Alibaba group), and we also receive T/T, Western Union or L/C.
Q4. Will you supply samples for test the quality?
We'd like to offer our customers samples for the quality evaluation for most products to develop business.
China
