Home Cart Sign in  
Chemical Structure| 120-73-0 Chemical Structure| 120-73-0

Structure of Purine
CAS No.: 120-73-0

Chemical Structure| 120-73-0

*Storage: {[sel_prStorage]}

*Shipping: {[sel_prShipping]}

,{[proInfo.pro_purity]}

Purine is an endogenous metabolite.

Synonyms: 3,5,7-Triazaindole; 3H-Imidazo[4,5-d]pyrimidine; β-Purine

4.5 *For Research Use Only !

{[proInfo.pro_purity]}
Cat. No.: {[proInfo.prAm]} Purity: {[proInfo.pro_purity]}

Change View

Size Price VIP Price

US Stock

Global Stock

In Stock
{[ item.pr_size ]} Inquiry {[ getRatePrice(item.pr_usd,item.pr_rate,item.mem_rate,item.pr_is_large_size_no_price, item.vip_usd) ]}

US Stock: ship in 0-1 business day
Global Stock: ship in 5-7 days

  • {[ item.pr_size ]}

In Stock

- +

Please Login or Create an Account to: See VIP prices and availability

US Stock: ship in 0-1 business day
Global Stock: ship in 2 weeks

  • 1-2 Day Shipping
  • High Quality
  • Technical Support
Product Citations

Product Citations      Show More

Qiushi Wei ; James M. Crawford ; Colin A. Wolden ; Moises A. Carreon ;

Abstract: The selective adsorption of NH3 over N2 and H2 is of interest for ammonia separation and synthesis. Zeolitic imidazolate frameworks (ZIFs) having tunable pores, high surface area, and chemical affinity for ammonia are suitable candidates for this particular application. Herein, we explore the influence of synthesis parameters on the morphology of ZIF-21 formed by hydrothermal synthesis. Among the many variables examined, it was found that the addition of weak bases such us sodium formate (SF) and weak acids such as ethylenediaminetetraacetic acid (EDTA) acts as crystal morphology modifiers to improve the crystallinity and morphology of ZIF-21 crystals. The addition of EDTA led to the formation of crystals with significant improvements in ammonia adsorption performance without modifying the characteristic LTA topology of ZIF-21. The resultant ZIF-21 crystals led to octahedral uniform shapes displaying remarkably high NH3/N2 and NH3/H2 ideal selectivities. Specifically, ideal selectivities of NH3/N2 = 400 and NH3/H2 = 390 were observed, which correspond to an ∼7- and 8-fold improvement as compared to pristine ZIF-21 (without the addition of EDTA), respectively. Besides the improved and regular ZI-21 morphology, two main factors led to the high observed NH3/N2 and NH3/H2 ideal selectivities of the EDTA-assisted ZIF-21 crystals: ammonia pore size confinement and enhanced polar–polar interactions between NH3 and polar ZIF-21 walls. Extended exposure to ammonia partially degraded the ZIF-21 crystal structure by reaction with the purine linkers.

Purchased from AmBeed:

Qiushi Wei ; Jolie M. Lucero ; James M. Crawford ; J. Douglas Way ; Colin A. Wolden ; Moises A. Carreon

Abstract: LTA type zeolitic imidazolate framework membranes denoted as ZIF-21 were synthesized and evaluated for the separation of a commodity chemical, ammonia, from nitrogen and hydrogen. Membranes were grown using secondary seeded growth. Ammonia permeances were as high as 1727 GPU, with NH3/N2, and NH3/H2 ideal selectivities of 35, and 12 respectively. ZIF-21 membranes were also evaluated for gas mixtures composed of 13.8:86.2 NH3/N2 and NH3/H2, with mixture separation selectivities as high as 7.6 for NH3/N2. Differences in adsorption, and diffusivities were identified as the key separation mechanisms. Specifically, for both gas pairs the polar-polar interaction between ammonia and the linker polar channels, led to the preferential adsorption of ammonia, and therefore favored thermodynamically the separation of ammonia from nitrogen and hydrogen. In addition, for NH3/N2 gas pair, differences in diffusivities was a contributing separation mechanism. For NH3/H2 gas pair, due to the faster hydrogen diffusivity, the kinetic contribution was a strong competing separation mechanism.

Keywords: Ammonia ; Membranes ; Gas separation ; Zeolitic imidazolate frameworks

Purchased from AmBeed:

Alternative Products

Product Details of Purine

CAS No. :120-73-0
Formula : C5H4N4
M.W : 120.11
SMILES Code : C12=NC=NC1=CNC=N2
Synonyms :
3,5,7-Triazaindole; 3H-Imidazo[4,5-d]pyrimidine; β-Purine
MDL No. :MFCD00079221
InChI Key :KDCGOANMDULRCW-UHFFFAOYSA-N
Pubchem ID :1044

Safety of Purine

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H315-H319-H335
Precautionary Statements:P261-P305+P351+P338

Isoform Comparison

Protocol

Bio Calculators
Preparing Stock Solutions 1mg 5mg 10mg

1 mM

5 mM

10 mM

8.33mL

1.67mL

0.83mL

41.63mL

8.33mL

4.16mL

83.26mL

16.65mL

8.33mL

Dissolving Methods
Please choose the appropriate dissolution scheme according to your animal administration guide.For the following dissolution schemes, clear stock solution should be prepared according to in vitro experiments, and then cosolvent should be added in turn:

in order to ensure the reliability of the experimental results, the clarified stock solution can be properly preserved according to the storage conditions; The working fluid for in vivo experiment is recommended to be prepared now and used on the same day;

The percentage shown in front of the following solvent refers to the volume ratio of the solvent in the final solution; If precipitation or precipitation occurs in the preparation process, it can be assisted by heating and/or ultrasound.
Protocol 1
Protocol 2
 

Historical Records

Categories