USA Chemical Suppliers

Alfa Chemistry Analytical Products - Products

Alfa Chemistry is a global leading supplier of analytical chemistry reagents, providing a wide range of analytical chemicals such as analytical standards for a variety of analytical applications.

×
Product
Olmesartan Medoxomil Impurity 32 Olmesartan Medoxomil Impurity 32. Uses: For analytical and research use. Group: Impurity standards. Alternative Names: 5-(4'-(bromomethyl)-[1,1'-biphenyl]-2-yl)-1-trityl-1H-tetrazole. CAS No. 124750-51-2. Molecular Formula: C33H25BrN4. Mole Weight: 557.48. Catalog: APB124750512. Alfa Chemistry Analytical Products
Olmesartan Medoxomil Impurity 33 Olmesartan Medoxomil Impurity 33. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1227626-50-7. Molecular Formula: C44H42N6O2. Mole Weight: 686.86. Catalog: APB1227626507. Alfa Chemistry Analytical Products
Olmesartan Medoxomil Impurity 35 Olmesartan Medoxomil Impurity 35. Uses: For analytical and research use. Group: Impurity standards. CAS No. 129482-56-0. Molecular Formula: C5H6Cl2O3. Mole Weight: 185. Catalog: APB129482560. Alfa Chemistry Analytical Products
Olmesartan Medoxomil Impurity 38 Olmesartan Medoxomil Impurity 38. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1418133-31-9. Molecular Formula: C53H54N12O8. Mole Weight: 987.09. Catalog: APB1418133319. Alfa Chemistry Analytical Products
Olmesartan Medoxomil Impurity 39 Olmesartan Medoxomil Impurity 39. Uses: For analytical and research use. Group: Impurity standards. Alternative Names: ethyl 4-acetyl-2-propyl-1H-imidazole-5-carboxylate. CAS No. 144690-07-3. Molecular Formula: C11H16N2O3. Mole Weight: 224.26. Catalog: APB144690073. Alfa Chemistry Analytical Products
Olmesartan Medoxomil Impurity 39 Olmesartan Medoxomil Impurity 39. Uses: For analytical and research use. Group: Impurity standards. CAS No. 144689-63-4. Molecular Formula: C29H30N6O6. Mole Weight: 558.6. Catalog: APB144689634. Alfa Chemistry Analytical Products
Olmesartan Medoxomil Impurity 41 Olmesartan Medoxomil Impurity 41. Uses: For analytical and research use. Group: Impurity standards. Alternative Names: ethyl 4-(2-methoxypropan-2-yl)-2-propyl-1H-imidazole-5-carboxylate. CAS No. 1092980-84-1. Molecular Formula: C13H22N2O3. Mole Weight: 254.33. Catalog: APB1092980841. Alfa Chemistry Analytical Products
Olmesartan Medoxomil Impurity 44 Olmesartan Medoxomil Impurity 44. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1443544-27-1. Molecular Formula: C5H4Cl2O3. Mole Weight: 182.98. Catalog: APB1443544271. Alfa Chemistry Analytical Products
Olmesartan Medoxomil Impurity A Olmesartan Medoxomil Impurity A. Uses: For analytical and research use. Group: Impurity standards. CAS No. 144689-24-7. Molecular Formula: C24H26N6O3. Mole Weight: 446.51. Catalog: APB144689247. Alfa Chemistry Analytical Products
Olmesartan Medoxomil Impurity E Olmesartan Medoxomil Impurity E. Uses: For analytical and research use. Group: Impurity standards. CAS No. 144689-78-1. Molecular Formula: C30H32N6O6. Mole Weight: 572.62. Catalog: APB144689781. Alfa Chemistry Analytical Products
Olmesartan Medoxomil Impurity F Olmesartan Medoxomil Impurity F. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1227626-51-8. Molecular Formula: C48H42N6O5. Mole Weight: 782.9. Catalog: APB1227626518. Alfa Chemistry Analytical Products
Olmesartan Medoxomil Impurity G Olmesartan Medoxomil Impurity G. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1048948-15-7. Molecular Formula: C43H38N6O2. Mole Weight: 670.82. Catalog: APB1048948157. Alfa Chemistry Analytical Products
Olmesartan Medoxomil Impurity H Olmesartan Medoxomil Impurity H. Uses: For analytical and research use. Group: Impurity standards. CAS No. 172875-53-5. Molecular Formula: C13H22N2O3. Mole Weight: 254.33. Catalog: APB172875535. Alfa Chemistry Analytical Products
Olmesartan Medoxomil Impurity J Olmesartan Medoxomil Impurity J. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1039762-40-7. Molecular Formula: C25H28N6O3. Mole Weight: 460.54. Catalog: APB1039762407. Alfa Chemistry Analytical Products
Olmesartan Medoxomil Impurity L Olmesartan Medoxomil Impurity L. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1347262-29-6. Molecular Formula: C25H28N6O3. Mole Weight: 460.54. Catalog: APB1347262296. Alfa Chemistry Analytical Products
Olmesartan Medoxomil Impurity N Olmesartan Medoxomil Impurity N. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1020157-01-0. Molecular Formula: C48H44N6O6. Mole Weight: 800.92. Catalog: APB1020157010. Alfa Chemistry Analytical Products
Olmesartan Medoxomil Impurity O Olmesartan Medoxomil Impurity O. Uses: For analytical and research use. Group: Impurity standards. CAS No. 172875-59-1. Molecular Formula: C45H44N6O3. Mole Weight: 716.89. Catalog: APB172875591. Alfa Chemistry Analytical Products
Olmesartan Medoxomil Impurity R Olmesartan Medoxomil Impurity R. Uses: For analytical and research use. Group: Impurity standards. CAS No. 144690-53-9. Molecular Formula: C45H42N6O4. Mole Weight: 730.87. Catalog: APB144690539. Alfa Chemistry Analytical Products
Olmesartan Medoxomil Impurity RNH-6363 Olmesartan Medoxomil Impurity RNH-6363. Uses: For analytical and research use. Group: Impurity standards. CAS No. 172875-98-8. Molecular Formula: C24H24N6O2. Mole Weight: 428.5. Catalog: APB172875988. Alfa Chemistry Analytical Products
Olmesartan Medoxomil Impurity S Olmesartan Medoxomil Impurity S. Uses: For analytical and research use. Group: Impurity standards. CAS No. 154709-18-9. Molecular Formula: C33H26N4O. Mole Weight: 494.6. Catalog: APB154709189. Alfa Chemistry Analytical Products
Olmesartan Medoxomil Impurity U Olmesartan Medoxomil Impurity U. Uses: For analytical and research use. Group: Impurity standards. CAS No. 144689-23-6. Molecular Formula: C26H30N6O3. Mole Weight: 474.56. Catalog: APB144689236. Alfa Chemistry Analytical Products
Olmesartan Medoxomil Methyl Ether Olmesartan Medoxomil Methyl Ether. Uses: For analytical and research use. Group: Impurity standards. Alternative Names: 1H-Imidazole-5-carboxylic acid, 4-(1-methoxy-1-methylethyl)-2-propyl-1-[[2'-(1H-tetrazol-5-yl)[1,1'-biphenyl]-4-yl]methyl]-, (5-methyl-2-oxo-1,3-dioxol-4-yl)methyl ester (9CI),1H-Imidazole-5-carboxylic acid, 4-(1-methoxy-1-methylethyl)-2-propyl-1-[[2'-(2H-tetrazol-5-yl)[1,1'-biphenyl]-4-yl]methyl]-, (5-methyl-2-oxo-1,3-dioxol-4-yl)methyl ester, (5-Methyl-2-oxo-1,3-dioxol-4-yl)methyl 4-(1-methoxy-1-methylethyl)-2-propyl-1-[[2'-(2H-tetrazol-5-yl)[1,1'-biphenyl]-4-yl]methyl]-1H-imidazole-5-carboxylate. CAS No. 896419-17-3. IUPAC Name: (5-methyl-2-oxo-1,3-dioxol-4-yl)methyl 5-(2-methoxypropan-2-yl)-2-propyl-3-[[4-[2-(1H-tetrazol-5-yl)phenyl]phenyl]methyl]imidazole-4-carboxylate. Molecular Formula: C30H32N6O6. Mole Weight: 572.61. Catalog: APS896419173. SMILES: CCCc1nc (c (C (=O)OCC2=C (C)OC (=O)O2)n1Cc3ccc (cc3)c4ccccc4c5nnn[nH]5)C (C) (C)OC. Format: Neat. Alfa Chemistry Analytical Products
Olopatadine Olopatadine. Uses: For analytical and research use. Group: Impurity standards. CAS No. 113806-05-6. Molecular Formula: C21H23NO3. Mole Weight: 337.42. Catalog: APB113806056. Alfa Chemistry Analytical Products
Olopatadine(E)-Isomer Olopatadine(E)-Isomer. Uses: For analytical and research use. Group: Impurity standards. CAS No. 113806-06-7. Molecular Formula: C21H23NO3. Mole Weight: 337.42. Catalog: APB113806067. Alfa Chemistry Analytical Products
Olopatadine Impurity 11 Olopatadine Impurity 11. Uses: For analytical and research use. Group: Impurity standards. CAS No. 113805-71-3. Molecular Formula: C21H23NO3. Mole Weight: 337.42. Catalog: APB113805713. Alfa Chemistry Analytical Products
Olopatadine Impurity 12 Olopatadine Impurity 12. Uses: For analytical and research use. Group: Impurity standards. CAS No. 113835-76-0. Molecular Formula: C21H25NO2. Mole Weight: 323.44. Catalog: APB113835760. Alfa Chemistry Analytical Products
Olopatadine Impurity 17 Olopatadine Impurity 17. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1346606-14-1. Molecular Formula: C21H23NO3. Mole Weight: 337.42. Catalog: APB1346606141. Alfa Chemistry Analytical Products
Olopatadine Impurity 18 Olopatadine Impurity 18. Uses: For analytical and research use. Group: Impurity standards. CAS No. 113835-94-2. Molecular Formula: C19H19NO3. Mole Weight: 309.36. Catalog: APB113835942. Alfa Chemistry Analytical Products
Olopatadine Impurity 26 Olopatadine Impurity 26. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1331635-21-2. Molecular Formula: C21H21ClD3NO3. Mole Weight: 376.9. Catalog: APB1331635212. Alfa Chemistry Analytical Products
Olopatadine Impurity 27 Olopatadine Impurity 27. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1246832-94-9. Molecular Formula: C21H23NO4. Mole Weight: 353.42. Catalog: APB1246832949. Alfa Chemistry Analytical Products
Olopatadine Impurity 29 Olopatadine Impurity 29. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1253107-27-5. Molecular Formula: C23H27NO3. Mole Weight: 365.47. Catalog: APB1253107275. Alfa Chemistry Analytical Products
Olopatadine Impurity 31 Olopatadine Impurity 31. Uses: For analytical and research use. Group: Impurity standards. CAS No. 113835-92-0. Molecular Formula: C20H21NO3. Mole Weight: 323.39. Catalog: APB113835920. Alfa Chemistry Analytical Products
Olopatadine Impurity 32 Olopatadine Impurity 32. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1346606-15-2. Molecular Formula: C23H24F3NO5. Mole Weight: 451.44. Catalog: APB1346606152. Alfa Chemistry Analytical Products
Olopatadine Impurity 35 Olopatadine Impurity 35. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1331668-21-3. Molecular Formula: C21H24ClNO4. Mole Weight: 389.88. Catalog: APB1331668213. Alfa Chemistry Analytical Products
Olopatadine Impurity 37 Olopatadine Impurity 37. Uses: For analytical and research use. Group: Impurity standards. CAS No. 113806-02-3. Molecular Formula: C22H25NO3. Mole Weight: 351.45. Catalog: APB113806023. Alfa Chemistry Analytical Products
Olopatadine Impurity 40 Olopatadine Impurity 40. Uses: For analytical and research use. Group: Impurity standards. CAS No. 113806-01-2. Molecular Formula: C22H25NO3. Mole Weight: 351.45. Catalog: APB113806012. Alfa Chemistry Analytical Products
Olopatadine Impurity 49 Olopatadine Impurity 49. Uses: For analytical and research use. Group: Impurity standards. CAS No. 111088-69-8. Molecular Formula: C22H24BrOP. Mole Weight: 415.31. Catalog: APB111088698. Alfa Chemistry Analytical Products
Olopatadine Impurity 7 Olopatadine Impurity 7. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1253179-74-6. Molecular Formula: C25H31NO3. Mole Weight: 393.53. Catalog: APB1253179746. Alfa Chemistry Analytical Products
Olopatadine related compound A Olopatadine related compound A. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1331822-32-2. Molecular Formula: C21H23NO4. Mole Weight: 353.42. Catalog: APB1331822322. Alfa Chemistry Analytical Products
Olopatadine related compound B Olopatadine related compound B. Uses: For analytical and research use. Group: Impurity standards. CAS No. 173174-07-7. Molecular Formula: C21H23NO4. Mole Weight: 353.42. Catalog: APB173174077. Alfa Chemistry Analytical Products
Olopatadine (Z)-Ethyl Ester Olopatadine (Z)-Ethyl Ester. Uses: For analytical and research use. Group: Impurity standards. CAS No. 113806-03-4. Molecular Formula: C23H27NO3. Mole Weight: 365.47. Catalog: APB113806034. Alfa Chemistry Analytical Products
O-Loxoprofen O-Loxoprofen. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1027400-34-5. Molecular Formula: C15H18O3. Mole Weight: 246.31. Catalog: APB1027400345. Alfa Chemistry Analytical Products
Olprinone Impurity 1 Olprinone Impurity 1. Uses: For analytical and research use. Group: Impurity standards. CAS No. 141354-29-2. Molecular Formula: C12H10N4O. Mole Weight: 226.24. Catalog: APB141354292. Alfa Chemistry Analytical Products
Olprinone Impurity 3 Olprinone Impurity 3. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1402751-73-8. Molecular Formula: C14H11N3O3. Mole Weight: 269.26. Catalog: APB1402751738. Alfa Chemistry Analytical Products
Olprinone Impurity B Olprinone Impurity B. Uses: For analytical and research use. Group: Impurity standards. Alternative Names: 5-(imidazo[1,2-a]pyridin-6-yl)-6-methyl-2-oxo-1,2-dihydropyridine-3-carboxamide. CAS No. 106730-62-5. Molecular Formula: C14H12N4O2. Mole Weight: 268.27. Catalog: APB106730625. Alfa Chemistry Analytical Products
Olsellidine impurity 10 Olsellidine impurity 10. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1401026-79-6. Molecular Formula: C16H24N2O. Mole Weight: 260.38. Catalog: APB1401026796. Alfa Chemistry Analytical Products
Olsellidine impurity 3 Olsellidine impurity 3. Uses: For analytical and research use. Group: Impurity standards. CAS No. 2109414-99-3. Molecular Formula: C12H17NO3S. Mole Weight: 255.33. Catalog: APB2109414993. Alfa Chemistry Analytical Products
Olsellidine impurity 8 Olsellidine impurity 8. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1401031-36-4. Molecular Formula: C18H22N2O3. Mole Weight: 314.39. Catalog: APB1401031364. Alfa Chemistry Analytical Products
Olsellidine impurity 9 Olsellidine impurity 9. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1401031-38-6. Molecular Formula: C16H20N2O. Mole Weight: 256.35. Catalog: APB1401031386. Alfa Chemistry Analytical Products
Omadacycline Impurity12 Omadacycline Impurity12. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1075240-42-4. Molecular Formula: C30H42N4O8. Mole Weight: 586.69. Catalog: APB1075240424. Alfa Chemistry Analytical Products
Omarigliptin Omarigliptin. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1226781-44-7. Molecular Formula: C17H20F2N4O3S. Mole Weight: 398.43. Catalog: APB1226781447. Alfa Chemistry Analytical Products
Omarigliptin Impurity 11 Omarigliptin Impurity 11. Uses: For analytical and research use. Group: Impurity standards. CAS No. 101385-93-7. Molecular Formula: C9H15NO3. Mole Weight: 185.22. Catalog: APB101385937. Alfa Chemistry Analytical Products
Omarigliptin Impurity 12 Omarigliptin Impurity 12. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1280210-80-1. Molecular Formula: C12H15N3O5S2. Mole Weight: 345.39. Catalog: APB1280210801. Alfa Chemistry Analytical Products
Omarigliptin Impurity 2 Omarigliptin Impurity 2. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1226781-87-8. Molecular Formula: C22H28F2N4O5S. Mole Weight: 498.55. Catalog: APB1226781878. Alfa Chemistry Analytical Products
Omarigliptin Impurity 9 Omarigliptin Impurity 9. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1443380-88-8. Molecular Formula: C17H20F2N4O3S. Mole Weight: 398.43. Catalog: APB1443380888. Alfa Chemistry Analytical Products
Omeprazole Impurity 2 Omeprazole Impurity 2. Uses: For analytical and research use. Group: Impurity standards. CAS No. 102-51-2. Molecular Formula: C7H10N2O. Mole Weight: 138.17. Catalog: APB102512. Alfa Chemistry Analytical Products
Omeprazole Impurity 23 Omeprazole Impurity 23. Uses: For analytical and research use. Group: Impurity standards. CAS No. 106135-28-8. Molecular Formula: C8H8N2O4S. Mole Weight: 228.22. Catalog: APB106135288. Alfa Chemistry Analytical Products
Omeprazole Impurity 34 Omeprazole Impurity 34. Uses: For analytical and research use. Group: Impurity standards. CAS No. 109371-19-9. Molecular Formula: C9H13NO. Mole Weight: 151.21. Catalog: APB109371199. Alfa Chemistry Analytical Products
Omeprazole Impurity 35 Omeprazole Impurity 35. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1424857-83-9. Molecular Formula: C9H13NO2. Mole Weight: 167.21. Catalog: APB1424857839. Alfa Chemistry Analytical Products
Omeprazole Impurity 51 Omeprazole Impurity 51. Uses: For analytical and research use. Group: Impurity standards. CAS No. 14248-66-9. Molecular Formula: C7H8N2O3. Mole Weight: 168.15. Catalog: APB14248669. Alfa Chemistry Analytical Products
Omeprazole Impurity 58 Omeprazole Impurity 58. Uses: For analytical and research use. Group: Impurity standards. CAS No. 143016-68-6. Molecular Formula: C8H10Cl3N. Mole Weight: 226.53. Catalog: APB143016686. Alfa Chemistry Analytical Products
Omeprazole Impurity F Omeprazole Impurity F. Uses: For analytical and research use. Group: Impurity standards. Alternative Names: 8-methoxy-1, 3-dimethyl-12-thioxobenzo[4', 5']imidazo[2', 1':2, 3]imidazo[1, 5-a]pyridin-2(12H)-one. CAS No. 125656-82-8. Molecular Formula: C16H13N3O2S. Mole Weight: 311.36. Catalog: APB125656828. Alfa Chemistry Analytical Products
Omeprazole Impurity G Omeprazole Impurity G. Uses: For analytical and research use. Group: Impurity standards. Alternative Names: 9-methoxy-1, 3-dimethyl-12-thioxobenzo[4', 5']imidazo[2', 1':2, 3]imidazo[1, 5-a]pyridin-2(12H)-one. CAS No. 125656-83-9. Molecular Formula: C16H13N3O2S. Mole Weight: 311.36. Catalog: APB125656839. Alfa Chemistry Analytical Products
Omeprazole Sulfone N-Oxide Omeprazole Sulfone N-Oxide. Uses: For analytical and research use. Group: Impurity standards. Alternative Names: Omeprazole USP Related Compound I, Omeprazole USP RC I, Omeprazole Sulphone N-Oxide, 4-Methoxy-2-[[(5-methoxy-1H-benzimidazol-2-yl)sulphonyl]methyl]-3,5-dimethylpyridine 1-Oxide,Omeprazole Imp. I (EP). CAS No. 158812-85-2. IUPAC Name: 5-methoxy-2-[(4-methoxy-3,5-dimethyl-1-oxidopyridin-1-ium-2-yl)methylsulfonyl]-1H-benzimidazole. Molecular Formula: C17H19N3O5S. Mole Weight: 377.41. Catalog: APS158812852. SMILES: COc1ccc2[nH]c (nc2c1)S (=O) (=O)Cc3c (C)c (OC)c (C)c[n+]3[O-]. Format: Neat. Alfa Chemistry Analytical Products
O-Methyl Mycophenolate Mofetil (EP Impurity D) O-Methyl Mycophenolate Mofetil (EP Impurity D). Uses: For analytical and research use. Group: Impurity standards. Alternative Names: 4-Hexenoic acid, 6-(1,3-dihydro-4,6-dimethoxy-7-methyl-3-oxo-5-isobenzofuranyl)-4-methyl-, 2-(4-morpholinyl)ethyl ester, (4E)-, 2-(Morpholin-4-yl)ethyl (4E)-6-(4,6-Dimethoxy-7-methyl-3-oxo-1,3-dihydro-isobenzofuran-5-yl)-4-methylhex-4-enoate, Mycophenolate Mofetil Imp. D (EP). CAS No. 1322681-37-7. IUPAC Name: 2-morpholin-4-ylethyl (E)-6-(4,6-dimethoxy-7-methyl-3-oxo-1H-2-benzofuran-5-yl)-4-methylhex-4-enoate. Molecular Formula: C24H33NO7. Mole Weight: 447.52. Catalog: APS1322681377. SMILES: COc1c (C)c2COC (=O)c2c (OC)c1C\C=C (/C)\CCC (=O)OCCN3CCOCC3. Format: Neat. Alfa Chemistry Analytical Products
Ondansetron-D3 Ondansetron-D3. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1132757-82-4. Molecular Formula: C18H16D3N3O. Mole Weight: 296.39. Catalog: APB1132757824. Alfa Chemistry Analytical Products
Ondansetron-D3 Hydrochloride Ondansetron-D3 Hydrochloride. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1346605-02-4. Molecular Formula: C18H17ClD3N3O. Mole Weight: 332.85. Catalog: APB1346605024. Alfa Chemistry Analytical Products
Ondansetron-D6 Hydrochloride Ondansetron-D6 Hydrochloride. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1225442-22-7. Molecular Formula: C18H14D6ClN3O. Mole Weight: 335.87. Catalog: APB1225442227. Alfa Chemistry Analytical Products
Ondansetron EP Impurity A Ondansetron EP Impurity A. Uses: For analytical and research use. Group: Impurity standards. CAS No. 153139-56-1. Molecular Formula: C16H20N2O. Mole Weight: 256.35. Catalog: APB153139561. Alfa Chemistry Analytical Products
Ondansetron EP Impurity B Ondansetron EP Impurity B. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1076198-52-1. Molecular Formula: C37H38N6O2. Mole Weight: 598.75. Catalog: APB1076198521. Alfa Chemistry Analytical Products

Would you like to list your products on USA Chemical Suppliers?

Our database is helping our users find suppliers everyday.

Add Your Products