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| Product | Description | |
|---|---|---|
| Rifamycin Impurity 25 | Rifamycin Impurity 25. Uses: For analytical and research use. Group: Impurity standards. CAS No. 13292-22-3. Molecular formula: C38H47NO13. Mole weight: 725.79. Catalog: APB13292223. |  |
| Rifaximin EP Impurity B (Rifamycin EP Impurity A) | Rifaximin EP Impurity B (Rifamycin EP Impurity A). Uses: For analytical and research use. Group: Impurity standards. CAS No. 13929-35-6. Molecular formula: C39H49NO14. Mole weight: 755.81. Catalog: APB13929356. | |
| 23-Monoketo Rifabutin | 23-Monoketo Rifabutin is an impurity of Rifabutin (R505000), a semisynthetic derivative of Rifamycin S that inhibits nucleic acid synthesis. Group: Biochemicals. Grades: Highly Purified. Pack Sizes: 2.5mg, 5mg. Molecular Formula: C46H58N4O11, Molecular Weight: 842.97. US Biological Life Sciences. |  Worldwide |
| 25-Deacetyl-21-Acetyl Rifampicin | 25-Deacetyl-21-acetyl Rifampicin is a structural isomer, and impurity, of Rifampicin (R508000), a semisynthetic antibiotic. Antibacerial (tuberculostatic). Synonyms: Semi-synthetic rifamycin. Antibacterial (tuberculostatic). Grade: > 95%. CAS No. 1416773-22-2. Molecular formula: C43H58N4O12. Mole weight: 822.96. |  |
| 2-Amino-4-methylpyridine-[d6] | 2-Amino-4-methylpyridine-[d6] is a labelled impurity of Rifaximin. Rifaximin is a semi-synthetic, nonsystemic antibiotic derived from rifamycin SV with antibacterial activity. It also acts as a pregnane X receptor (PXR) agonist. It is approved for the treatment of traveler's diarrhea, irritable bowel syndrome, and hepatic encephalopathy. Synonyms: 4-Methyl-2-pyridinamine-d6; 2-Amino-4-picoline-d6; Aminopicoline-d6; Ascensil-d6; NSC 1490-d6; NSC 176165-d6; NSC 6972-d6. CAS No. 916979-09-4. Molecular formula: C6H2D6N2. Mole weight: 114.17. | |
| (2S, 16Z, 18E, 20S, 21S, 22R, 23R, 24R, 25S, 26R, 27S, 28E) -25- (Acetyloxy) -5, 21, 23-trihydroxy-27-methoxy-2, 4, 16, 20, 22, 24, 26-heptamethyl-11-methylene-2, 7- (epoxypentadeca[1, 11, 13]trienimino) benzofuro[4, 5-e]pyrido[1, 2-a]benzimidazole-1, 6, 15 (2H, 11H) -trione | (2S, 16Z, 18E, 20S, 21S, 22R, 23R, 24R, 25S, 26R, 27S, 28E) -25- (Acetyloxy) -5, 21, 23-trihydroxy-27-methoxy-2, 4, 16, 20, 22, 24, 26-heptamethyl-11-methylene-2, 7- (epoxypentadeca[1, 11, 13]trienimino) benzofuro[4, 5-e]pyrido[1, 2-a]benzimidazole-1, 6, 15 (2H, 11H) -trione is an impurity of Rifaximin (R509500), a non-absorbable semisynthetic Rifamycin antibiotic. Group: Biochemicals. Grades: Highly Purified. CAS No. 1351775-03-5. Pack Sizes: 2.5mg, 5mg. Molecular Formula: C43H49N3O11, Molecular Weight: 783.86. US Biological Life Sciences. | Worldwide |
| (2S, 16Z, 18E, 20S, 21S, 22R, 23R, 24R, 25S, 26R, 27S, 28E) -25- (Acetyloxy) -6, 21, 23-trihydroxy-27-methoxy-2, 4, 16, 20, 22, 24, 26-heptamethyl-11-methylene-2, 7- (epoxypentadeca[1, 11, 13]trienimino) benzofuro[4, 5-e]pyrido[1, 2-a]benzimidazole-1, 5, 15 (2H, 11H) -trione | (2S, 16Z, 18E, 20S, 21S, 22R, 23R, 24R, 25S, 26R, 27S, 28E) -25- (Acetyloxy) -6, 21, 23-trihydroxy-27-methoxy-2, 4, 16, 20, 22, 24, 26-heptamethyl-11-methylene-2, 7- (epoxypentadeca[1, 11, 13]trienimino) benzofuro[4, 5-e]pyrido[1, 2-a]benzimidazole-1, 5, 15 (2H, 11H) -trione is an impurity of Rifaximin (R509500), a non-absorbable semisynthetic Rifamycin antibiotic. Group: Biochemicals. Grades: Highly Purified. CAS No. 1351775-04-6. Pack Sizes: 2.5mg, 5mg. Molecular Formula: C43H49N3O11, Molecular Weight: 783.86. US Biological Life Sciences. | Worldwide |
| 3-[[2-(4-Pyridinylcarbonyl)hydrazono]methyl]rifamycin | An impurity of Rifampicin. Rifampicin is a bactericidal antibiotic agent of the rifamycin group. Synonyms: 3-Isonicotiyl hydrazinomethyl Rifampicin; Rifampicin Impurity 1 (Mixture of Z and E Isomers); 2,7-(Epoxypentadeca[1,11,13]trienimino)naphtho[2,1-b]furan-8-carboxaldehyde, 1,2-dihydro-5,6,9,17,19,21-hexahydroxy-23-methoxy-2,4,12,16,18,20,22-heptamethyl-1,11-dioxo-, 8-(isonicotinoylhydrazone), 21-acetate; Isonicotinic acid, [(1,2-dihydro-5,6,9,17,19,21-hexahydroxy-23-methoxy-2,4,12,16,18,20,22-heptamethyl-1,11-dioxo-2,7-(epoxypentadeca[1,11,13]trienimino)naphtho[2,1-b]furan-8-yl)methylene]hydrazide, 21-acetate; 3-[[(4-Pyridinylcarbonyl)hydrazono]methyl]rifamycin; NCI 145-626; NSC 145626; 3-(Isonicotinoylhydrazonomethyl) Rifamycin; 3-Formyl Rifamycin Isonicotinoyl Hydrazone. Grade: 95%. CAS No. 13292-53-0. Molecular formula: C44H52N4O13. Mole weight: 844.90. | |
| 3-[(4-Methyl-1-piperazinyllimino)methyl] Rifamycin O | 3-[(4-Methyl-1-piperazinyllimino)methyl] Rifamycin O is an impurity of Rifampicin. Rifampicin is a bactericidal antibiotic agent of the rifamycin group. Molecular formula: C45H58N4O14. Mole weight: 878.96. | |
| 3-Amino-4-imino-rifamycin S | 3-Amino-4-imino-rifamycin S. Uses: Designed for use in research and industrial production. Additional or Alternative Names: Rifabutin EP Impurity D. CAS No. 62041-01-4. Molecular formula: C37H47N3O11. Mole weight: 709.78. Purity: 0.95. Product ID: ACM62041014. Alfa Chemistry ISO 9001:2015 Certified. |  |
| 3-(Isonicotinoylhydrazonomethyl) Rifamycin | 3-(Isonicotinoylhydrazonomethyl) Rifamycin. Uses: For analytical and research use. Group: Impurity standards. Alternative Names: 3-Formylrifamycin Isonicotinylhydrazone. CAS No. 13292-53-0. Pack Sizes: 5MG. Molecular formula: C44H52N4O13. Mole weight: 844.90. Catalog: APS13292530. SMILES: CO[C@H]1\C=C\O[C@@]2(C)Oc3c(C)c(O)c4c(O)c(NC(=O)\C(=C/C=C/[C@H](C)[C@H](O)[C@@H](C)[C@@H](O)[C@@H](C)[C@H](OC(=O)C)[C@@H]1C)\C)c(\C=N\NC(=O)c5ccncc5)c(O)c4c3C2=O. Format: Neat. Shipping: Room Temperature. | |
| 4-Methylpiperazine-1-yl-imino Rifamycin O | 4-Methylpiperazine-1-yl-imino Rifamycin O is an impurity of Rifampamycin. Rifampicin is a bactericidal antibiotic agent of the rifamycin group. Molecular formula: C45H60N4O14. Mole weight: 880.97. | |
| Desacetyl Rifampicin Quinone | Desacetyl Rifampicin Quinone is an impurity of Rifampicin. Group: Biochemicals. Alternative Names: 25-Deacetyl-1, 4-didehydro-1, 4-dideoxy-3-[[ (4-methyl-1-piperazinyl) imino]methyl]-1, 4-dioxo-Rifamycin; 25-Desacetylrifampin Quinone. Grades: Highly Purified. CAS No. 65110-92-1. Pack Sizes: 1mg. US Biological Life Sciences. | Worldwide |
| Desacetyl Rifampicin Quinone | Desacetyl Rifampicin Quinone is an impurity of Rifampicin. Rifampicin is a bactericidal antibiotic agent of the rifamycin group. Synonyms: 25-Deacetyl-1,4-didehydro-1,4-dideoxy-3-[[(4-methyl-1-piperazinyl)imino]methyl]-1,4-dioxo-Rifamycin; 25-DesacetylRifampicin Quinone; (2S,8E,12E,14E,16S,17S,18R,19R,20R,21S,22S,23S,24E)-5,17,19,21-Tetrahydroxy-23-methoxy-2,4,12,16,18,20,22-heptamethyl-8-{[(4-methylpiperazin-1-yl)amino]methylidene}-6H-2,7-(epoxypentadeca[1,11,13]trienoazeno)naphtho[2,1-b]furan-1,6,9,11(2H,8H)-tetrone; 25--[[(4-methyl-1-piperazinyl)imino]methyl]-1,4-dioxo-RiflRifampicin Quinone. Grade: > 98%. CAS No. 65110-92-1. Molecular formula: C41H54N4O11. Mole weight: 778.89. | |
| Rifabutin Impurity C | Rifabutin Impurity C is an impurity of Rifabutin (R505000), a semisynthetic derivative of Rifamycin S that inhibits nucleic acid synthesis. Group: Biochemicals. Grades: Highly Purified. CAS No. 1242076-45-4. Pack Sizes: 2.5mg, 5mg. Molecular Formula: C46H60N4O11, Molecular Weight: 844.99. US Biological Life Sciences. | Worldwide |
| Rifamycin Y | Rifamycin Y. Uses: For analytical and research use. Group: Impurity standards. CAS No. 15271-73-5. Molecular formula: C39H47NO15. Mole weight: 769.8. Catalog: APB15271735. | |
| Rifaximin EP Impurity B | Rifaximin EP Impurity B is an impurity of Rifaximin. Rifaximin is a semi-synthetic, nonsystemic antibiotic derived from rifamycin SV with antibacterial activity. It also acts as a pregnane X receptor (PXR) agonist. It is approved for the treatment of traveler's diarrhea, irritable bowel syndrome, and hepatic encephalopathy. Uses: A rifamycin (r508200) derivative as antibacterial agent. Synonyms: Rifamycin B; Nancimycin; 4-O-(Carboxymethyl)rifamycin; 4-O-(Carboxymethyl)rifamycin; [(1,2-Dihydro-5,6,17,19,21-pentahydroxy-23-methoxy-2,4,12,16,18,20,22-heptamethyl-1,11-dioxo-2,7-(epoxypentadeca[1,11,13]trienimino)naphtho[2,1-b]furan-9-yl)oxy]acetic Acid 21-Acetate. CAS No. 13929-35-6. Molecular formula: C39H49NO14. Mole weight: 755.80. | |
| Rifaximin EP Impurity C | Rifaximin EP Impurity C is an antibacterial drug which functions by inhibiting bacterial RNA polymerase (RNAP), is an impurity of Rifaximin. It also has anti-gram-positive bacterial and mycobacterium activities. Uses: Anti-bacterial agents. Synonyms: Rifamycin SV; Rifocin; Rifamicine SV; (2S,12Z,14E,16S,17S,18R,19R,20R,21S,22R,23S,24E)-21-(Acetyloxy)-5,6,9,17,19-pentahydroxy-23-methoxy-2,4,12,16,18,20,22-heptamethyl-2,7-(epoxypentadeca[1,11,13]trienimino)naphtho[2,1-b]furan-1,11(2H)-dione. Grade: >95%. CAS No. 6998-60-3. Molecular formula: C37H47NO12. Mole weight: 697.77. | |
| Rifaximin EP Impurity E | Rifaximin EP Impurity E is an impurity of Rifaximin. Rifaximin is a semi-synthetic, nonsystemic antibiotic derived from rifamycin SV with antibacterial activity. It also acts as a pregnane X receptor (PXR) agonist. It is approved for the treatment of traveler's diarrhea, irritable bowel syndrome, and hepatic encephalopathy. Synonyms: Rifamycin S; 5,17,19,21-Tetrahydroxy-23-methoxy-2,4,12,16,18,20,22-heptamethyl-2,7-(epoxypentadeca[1,11,13]trienimino)naphtho[2,1-b]furan-1,6,9,11(2H)-tetrone 21-Acetate; 1,4-Dideoxy-1,4-dihydro-1,4-dioxorifamycin. Grade: 98%. CAS No. 13553-79-2. Molecular formula: C37H45NO12. Mole weight: 695.75. | |
| Rifaximin EP Impurity F | Rifaximin EP Impurity F is an intermediate of Rifaximin. Rifaximin is a semi-synthetic, nonsystemic antibiotic derived from rifamycin SV with antibacterial activity. It also acts as a pregnane X receptor (PXR) agonist. It is approved for the treatment of traveler's diarrhea, irritable bowel syndrome, and hepatic encephalopathy. Uses: Rifaximin intermediate. Synonyms: Rifamycin O; 4-O-(Carboxymethyl)-1-deoxy-1,4-dihydro-4-hydroxy-1-oxo-rifamycin γ-Lactone. Grade: 95%. CAS No. 14487-05-9. Molecular formula: C39H47NO14. Mole weight: 753.79. | |
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