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| Product | Description | |
|---|---|---|
| Allopurinol Impurity A | A metabolite of Allopurinol. Synonyms: 5-amino-1H-pyrazole-4-carboxamide. Grades: > 95%. CAS No. 5334-31-6. Molecular formula: C4H6N4O. Mole weight: 126.12. |  |
| Allopurinol Impurity B | A metabolite of Allopurinol. Synonyms: 3-(Formylamino)-1H-pyrazole-4-carboxamide. Grades: > 95%. CAS No. 22407-20-1. Molecular formula: C5H6N4O2. Mole weight: 154.13. | |
| Allopurinol Impurity C | A metabolite of Allopurinol. Synonyms: Allopurinol Related Compound C; 3-(4H-1,2,4-Triazol-4-yl)-1H-pyrazole-4-carboxamide. Grades: > 95%. CAS No. 1346604-13-4. Molecular formula: C6H6N6O. Mole weight: 178.15. | |
| Allopurinol Impurity D | It is a metabolite of Allopurinol. Synonyms: 3-Amino-4-carbethoxypyrazole; Ethyl 3-amino-4-pyrazolecarboxylate; Allopurinol Related Compound D; Allopurinol EP Impurity D; Allopurinol USP Related Compound D; 5-Amino-1H-pyrazole-4-carboxylic acid ethyl ester; Ethyl 3-aminopyrazole-4-carboxylate. Grades: > 95 %. CAS No. 6994-25-8. Molecular formula: C6H9N3O2. Mole weight: 155.16. | |
| Allopurinol Impurity E | A metabolite of Allopurinol. Synonyms: 3-(Formylamino)-1H-pyrazole-4-carboxylic Acid Ethyl Ester. Grades: > 95%. CAS No. 31055-19-3. Molecular formula: C7H9N3O3. Mole weight: 183.17. | |
| Allopurinol Impurity F | A metabolite of Allopurinol. Synonyms: (E/Z)-3-[(2-Cyano-3-ethoxy-3-oxo-1-propenyl)amino]-1H-Pyrazole-4-carboxylic Acid Ethyl Ester. Grades: > 95%. CAS No. 321571-07-7. Molecular formula: C12H14N4O4. Mole weight: 278.27. | |
| Allopurinol Nitrile Impurity (Allopurinol Impurity 2) | Allopurinol Nitrile Impurity (Allopurinol Impurity 2). Uses: For analytical and research use. Group: Impurity standards. CAS No. 16617-46-2. Molecular formula: C4H4N4. Mole weight: 108.1. Catalog: APB16617462. |  |
| 3-(4H-1,2,4-Triazol-4-yl)-1H-pyrazole-4-carboxamide | An impurity of Allopurinol. Group: Biochemicals. Alternative Names: Allopurinol Impurity C. Grades: Highly Purified. Pack Sizes: 250mg. US Biological Life Sciences. |  Worldwide |
| 3-Amino-4-carbamoylpyrazole Hemisulfate | Allopurinol impurity. A pyrazole derivative that has been shown to induce neoplasm immunogenicity. Group: Biochemicals. Alternative Names: 3-Amino-1H-pyrazole-4-carboxamide Hemisulfate; 3-Amino-Pyrazole-4-carboxamide Hemisulfate. Grades: Highly Purified. CAS No. 27511-79-1. Pack Sizes: 5g. US Biological Life Sciences. | Worldwide |
| 3-(Formylamino)-1H-pyrazole-4-carboxamide | An impurity of Allopurinol with inhibitory effects on human hypoxanthine phosphoribosyl transferase. Group: Biochemicals. Alternative Names: 3-Formamidopyrazole-4-carboxamide; Allopurinol Impurity B. Grades: Highly Purified. CAS No. 22407-20-1. Pack Sizes: 250mg. US Biological Life Sciences. | Worldwide |
| 3-(Formylamino)-1H-pyrazole-4-carboxylic Acid Ethyl Ester | An impurity of Allopurinol. Group: Biochemicals. Alternative Names: 3-Formamidopyrazole-4-carboxylic Acid Ethyl Ester; Ethyl 3-(Formylamino)-1H-pyrazole-4-carboxylate; Allopurinol Impurity E. Grades: Highly Purified. Pack Sizes: 250mg. US Biological Life Sciences. | Worldwide |
| (E)-3-[(2-Cyano-3-ethoxy-3-oxo-1-propenyl)amino]-1H-pyrazole-4-carboxylic Acid Ethyl Ester | An impurity of Allopurinol. Group: Biochemicals. Alternative Names: Ethyl (E)-3-[(2-cyano-3-ethoxy-3-oxo-1-propenyl)amino]-1H-pyrazole-4-carboxylate; Ethyl 3-(2-carbethoxy-2-cyanoethenyl)amino-1H-pyrazole-4-carboxylate. Grades: Highly Purified. CAS No. 52632-17-4. Pack Sizes: 250mg. US Biological Life Sciences. | Worldwide |
| Ethyl 2-aminopyrazole-3-carboxylate | Ethyl 2-aminopyrazole-3-carboxylate. Group: Biochemicals. Alternative Names: Allopurinol Impurity D; 3-Amino-4-pyrazolecarboxylic acid ethyl ester. Grades: Highly Purified. CAS No. 6994-25-8. Pack Sizes: 10g, 25g, 50g, 100g, 250g. Molecular Formula: C6H9N3O2. US Biological Life Sciences. | Worldwide |
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