Customization: | Available |
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Powder: | Yes |
Customized: | Customized |
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98% High Purity Cytosine
Cytosine, scientific name 4-amino-2-carbonylpyrimidine, is an organic compound with the molecular formula C4H5N3O. It is one of the main base components in nucleic acids (DNA and RNA). Cytosine can be synthesized from dimethyl uracil, and chloroacetic acid as raw materials. Used as a pharmaceutical intermediate.
Abbreviated as C. One of the pyrimidine type bases in nucleic acid. It exists in DNA and RNA. In plant DNA, in addition to cytosine, there is also a small amount of 5-methylcytosine. In the double helix of DNA, cytosine on one strand pairs with guanine on the other strand, forming three hydrogen bonds between molecules. This hydrogen bond between base complementary pairs is one of the important forces for the stability of DNA double helix. Cytosine nucleoside and cytosine nucleotide can both be used as drugs to elevate white blood cells. It can be synthesized from dimethyl uracil, and chloroacetic acid as raw materials.
Lose water at 100 ºC, turn brown at 300 ºC, decompose at 320-325 ºC. 1g of product is soluble in 130ml of water, slightly soluble in ethanol, and insoluble in ether. At pH 2, the maximum absorption wavelength is 276nm, the molar absorption coefficient is 10000, the minimum absorption wavelength is 238nm, and the absorbance ratio is A250/A260=0.48, A280/A260=1.53, and A290/A260=0.78. Irritating.
Synonyms:4-AMINO-2(1H)-PYRIMIDINONE;4-AMINO-2(1)-PYRIMIDONE;4-AMINO-2-PYRIMIDINOL;4-AMINO-2-OXO-1,2-DIHYDROPYRIMIDINE;4-AMINO-2-HYDROXYPYRIMIDINE;2-Oxy-4-amino pyrimidine;AURORA KA-682;CYTOSINE
Product Name: | Cytosine |
CAS: | 71-30-7 |
MF: | C4H5N3O |
EINECS: | 200-749-5 |
MW: | 111.1 |
Item |
Specification |
Appearance |
White Powder |
Assay |
≥99.0% |
Loss On Drying |
≤1.0% |
Residue On Ignition |
≤0.2% |
Heavy Metals |
≤20ppm |
Total Plate Count |
≤100cfu/G |
Yeast & Mold |
≤100cfu/G |
E.Coli |
Negative |
Product Name | CAS No. | Product Name | CAS No. |
Lufenuron | 103055-07-8 | Toltrazuril | 69004-03-1 |
Nitenpyram | 120738-89-8 | Praziquantel/Biltricide | 55268-74-1 |
Fenbendazole | 43210-67-9 | Tetramisole Hcl | 5086-74-8 |
Levamisole | 14769-73-4 | Ponazuril | 9004-4-2 |
Diclazuril | 101831-37-2 | Florfenicol | 73231-34-2 |
Albendazole | 54965-21-8 | Mebendazole | 31431-39-7 |
Ivermectin | 70288-86-7 | Enrofloxacin Hcl | 112732-17-9 |
We undertake the customization business of men's health care products, including natural plant materials, customized packaging and labels to enhance sexual capacity. We can also make compound products, such as kidney tonifying capsules and tablets, solid drinks and tablet candies, gummy bears and so on.
As a supplier of plant extracts for 15 years, we can guarantee the quality of products, we can provide different customized services.If you have any requirements, please contact us.
1. Timely online communication and reply within 12 hours;
2. Choose high-quality raw materials;
3.OEM/ODM available;
4. Reasonable and competitive price;
5. Free samples can be provided;
6. Credit guarantee: Made in China third-party trade guarantee;
7. Fast delivery time: Stable inventory of products;Mass production within 7 days;
8. Quality assurance: Internationally authorized third party testing for the products you need.
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We accept International Express--Fedex/DHL/UPS, air shipping and sea shipping
1kg/bag (1kg net weight, 1.2kg gross weight, packed in an aluminum foil bag inside and paper carton outside ) or as per your request.
25kg/drum (25kg net weight,28kg gross weight; Packed in a cardboard-drum with two plastic-bags inside. Drum Size: 510mm high, 350mm diameter) ;
Storage: Storein cool & dry place. Do not freeze. Keep away from strong light and heat.
Shelf life: two years when properly stored.
Shipping method: International express by air, by sea, UPS and EMS service.
Goods weight |
Packing |
Shipping method |
Lead-time |
1-50kg |
Below 5kg Use Foil bag;5-25kg use two layer PP bag,then into master carton or cardboard drum |
International express |
1~3 days after your payment |
100-200kg |
25kg/drum,use two layer PP bag,then into cardboard drum |
Air shipping Sea Shipping |
3~5 days after your payment |
Over 500kg |
25kg/drum,use two layer PP bag,then into cardboard drum |
Sea shipping |
5~10 days after your payment |
Q1: Can I get some free sample?
A: Yes, we offer free sample to client and you only need to pay the fright.