REFSYN BIOSCIENCES is a Contract Research Organization (CRO) established in 2012, Pondicherry, which offers a wide range of research services to the Industries related to Pharmaceutical, Biotechnology and Agricultural industry and Academic like research institutions, universities, in addition to governmental organizations, in the form of research services outsourced on a contract basis. We are providing quality service, with focus on reducing time and cost, we understand the customer requirement and working close with them to match their timeline.

Our team provides synthesis of DRUG METABOLITES as Reference standard compounds at the multi scale level for the confirmation and pharmacologic/toxicological characterization as well as for academic institutions and Clinical research studies of drugs with high purity.

We are supplying APIs related compounds, Impurities, hydroxy Metabolites, Demethyl Metabolites, N-oxide metabolites which are considered as Phase-I metabolites. Also, we under take for the synthesis of Glucuronide metabolites (Phase-II metabolites).

Refsyn-drug impurities and drug metabolites CLICK HERE
Our Products
PRODUCT CODE COMPOUND NAME CAS NO SYNONYMS
ACECLOFENAC
RBPL-A0101 Aceclofenac impurity A 15307-86-5 Diclofenac free acid
RBPL-A0102 Aceclofenac impurity B 15307-78-5 Methyl [2-[(2,6-dichlorophenyl) amino] phenyl]acetate; Diclofenac methyl ester
RBPL-A0103 Aceclofenac impurity I 15362-40-0 Diclofenac Amide
AZITHROMYCIN
RBPL-A0202 Azithromycin impurity F 612069-28-0 3’-N-Desmethyl-3’-N-formyl Azithromycin
RBPL-A0203 Azithromycin impurity I 172617-84-4 3′-N-Demethylazithromycin
RBPL-A0204 Azithromycin impurity L 90503-06-3 Azithromycin 3'-N-Oxide
ALBENDAZOLE
RBPL-A0301 Albendazole impurity C 75184-71-3 Albendazole Sulfone
RBPL-A0302 Albendazole impurity B 54029-12-8 Albendazole Sulfoxide
RBPL-A0305 Albendazole impurity A 80983-36-4 Amino Albendazole
ACEBUTALOL
RBPL-A0401 Acebutalol impurity C 40188-45-2 N-(3-Acetyl-4-hydroxyphenyl)butanamide
RBPL-A0402 Acebutalol impurity J 57898-79-0 N-[3-Acetyl-4-[(2RS)-2-hydroxy-3-[(1-methylethyl) amino] propoxy] phenyl] propanamide
AZELASTINE
RBPL-A0501 Azelastine impurity A 613-94-5 Benzoyl hydrazine
APREPITANT
RBPL-A0701 Aprepitant Impurity 170729-76-7 Desfluoro aprepitant
CLARITHROMYCIN
RBPL-C0101 14-hydroxy Clarithromycin 116836-41-0 --
RBPL-C0102 Clarithromycin impurity D 101666-68-6 N-Desmethyl Clarithromycin
RBPL-C0103 Clarithromycin impurity Q 118074-07-0 Clarithromycin N-Oxide
RBPL-C0104 Clarithromycin impurity I 118058-74-5 De(cladinosyl) Clarithromycin
RBPL-C0105 Clarithromycin impurity K 127157-35-1 3-O-De(cladinosyl)-8,9,10,11-tetradehydro-9-deoxo-11,12-dideoxy-9,12-epoxy Clarithromycin
RBPL-C0106 Clarithromycin impurity L 127253-05-8 Clarithromycin (9Z)-Oxime
RBPL-C0107 Clarithromycin impurity M 127182-43-8 N-Desmethyl-6-O-methylerythromycin (9E)-Oxime
RBPL-C0108 Clarithromycin impurity N 144604-03-5 (10E)-10,11-Didehydro-11-deoxy-6-O-methylerythromycin
CITALOPRAM
RBPL-C0301 Citalopram impurity D 1188264-72-3 N-desmethyl Citalopram Hydrochloride
RBPL-C0304 Citalopram impurity E NA Citalopram 5-Chloro Analog HBr
CLOPIDOGREL
RBPL-C0401 Clopidogrel impurity A 144750-42-5 (S)-Clopidogrel Acid Hydrochloride
COLCHICINE
RBPL-C0501 Colchicine EP impurity E 7336-33-6 3-Demethyl Colchicine
CLINDAMYCIN
RBPL-C0601 Clindamycin impurity NA Clindamycin sulphone
RBPL-C0602 Clindamycin impurity 22431-46-5 Clindamycin sulphoxide
DICLOFENAC
RBPL-D0101 Diclofenac impurity A 15362-40-0 Diclofenac Amide
RBPL-D0102 Diclofenac isopropyl impurity 66370-79-4 Isopropyl 2-(2-((2,6-Dichlorophenyl)amino)phenyl)acetate
RBPL-D0103 Diclofenac methyl ester impurity 15307-78-5 2-[(2,6-Dichlorophenyl)amino]benzeneacetic Acid Methyl Ester;
RBPL-D0104 Diclofenac impurity F 560075-65-2 2,6-Dichloro-N-(4-chlorophenyl)-benzeneacetamide
DESVENLAFAXINE
RBPL-D0301 Desvenlafaxine impurity NA Desvenlafaxine-N-oxide
FINOFIBRATE
RBPL-F0401 Finofibrate impurity A 42019-78-3 4-Chloro-4′-hydroxybenzophenone
RBPL-F0402 Finofibrate impurity B 42017-89-0 Fenofibric Acid
GALANTHAMINE
RBPL-G0101 Galanthamine impurity B 1668-85-5 Epi Galanthamine
RBPL-G0102 Galanthamine impurity D 664995-65-7 Anhydro Galanthamine
IBUPROFEN
RBPL-I0201 Ibuprofen impurity L 53949-53-4 1-Hydroxy Ibuprofen
RBPL-I0202 Ibuprofen impurity E 38861-78-8 1-(4-Isobutylphenyl)ethanone
LAMOTRIGINE
RBPL-L0301 Lamotrigine related compound D 252186-79-1 3-(2,3-Dichlorobenzamido) Lamotrigine
LANSOPRAZOLE
RBPL-L0402 Lansoprazole impurity 953787-54-7 Lansoprazole sulphone N-oxide
RBPL-L0403 Lansoprazole impurity C 103577-40-8 Lansoprazole sulphide
MELOXICAM
RBPL-M0101 Meloxicam impurity B 7305-71-7 2-Amino-5-methylthiazole
NIMSULIDE
RBPL-N0101 Nimsulide impurity D 5422-92-4 4-nitro-2-phenoxyaniline
OMEPRAZOLE
RBPL-O0201 Omeprazole impurity B 37052-78-1 5-Methoxy-2-mercaptobenzimidazole
RBPL-O0202 Omeprazole impurity C 73590-85-9 Omeprazole Sulfide
RBPL-O0203 Omeprazole impurity F&G 125656-82-8+
125656-83-9
8(9)-Methoxy-1,3-dimethyl-12-thioxopyrido[1’,2’:3,4]imidazo[1,2-a]benzimidazol-2-(12H)-one
RBPL-O0204 Omeprazole impurity H 863029-89-4 4-Desmethoxy-4-chloro Omeprazole
RBPL-O0205 Omeprazole impurity I 158812-85-2 Omeprazole Sulfone N-Oxide
PARACETAMOL
RBPL-P0201 Paracetamol impurity J 539-03-7 4′-Chloroacetanilide
PROPAFENONE
RBPL-P0301 Propafenone impurity A 3516-95-8 2'-Hydroxy-3-phenylpropiophenone
RBPL-P0302 Propafenone impurity D NA NA
RBPL-P0303 Propafenone impurity F 1329643-40-4 1,1’-[Hydroxypropane-1,3-diylbis(oxy-2,1-phenylene)]bis(3-phenylpropan-1-one)
RBPL-P0304 Propafenone impurity G 1346603-80-2 Propafenone Dimer Impurity
RBPL-P0305 Propafenone impurity H 27439-12-9 (2R)-2-Phenyl-2,3-dihydro-4H-chromen-4-one
RBPL-P030 Propafenone impurity C 22525-95-7 2'-(2,3-Epoxypropoxy)-3-phenyl-propiophenone
RBPL-P030 Propafenone impurity E 165279-79-8 Depropylamino Chloro Propafenone
PROMETHAZINE
RBPL-P0401 Promethazine impurity D 7640-51-9 Promethazine sulphoxide
QUETIAPINE
RBPL-Q0101 Quetiapine impurity S 329216-63-9 Quetiapine-S-oxide
ROXITHROMYCIN
RBPL-R0102 Roxithromycin impurity F 118267-18-8 N-Demethyl Roxithromycin
RAMIPRIL
RBPL-R0301 Ramipril impurity D 108731-95-9 Ramipril Diketopiperazine
RISPERIDONE
RBPL-R0401 Risperidone impurity C 144598-75-4 9-Hydroxy Risperidone
RBPL-R0402 Risperidone impurity 832747-55-4 Risperidone-N-oxide
RANITIDINE
RBPL-R0501 Ranitidine impurity B 66356-53-4 5-[[(2-Aminoethyl)thio]methyl]-N,N-dimethyl-2-furanmethanamine
RABEPRAZOLE
RBPL-R0701 Rabeprazole impurity B 924663-37-6 Rabeprazole sulphone N-oxide
RBPL-R0702 Rabeprazole Impurity E 117976-47-3 Rabeprazole sulphone
SILDENAFIL
RBPL-S0101 Sildenafil metabolite 139755-82-1 N-desmethyl Sildenafil
RBPL-S0102 Sildenafil impurity B 1094598-75-0 Sildenafil-N-oxide
TRAMADOL
RBPL-T0201 Tramadol impurity 147441-56-3 Tramadol-N-oxide
RBPL-T0202 Tramadol impurity A 22204-88-2 (1RS,2SR)-2-[(dimethylamino)methyl]-1-(3-methoxyphenyl)-cyclohexanol
THIOCHOLCHICOSIDE
RBPL-T0301 Thiocolchicine metabolite 87424-25-7 3-O-desmethyl Thiocholchicine
REFSYN BIOSCIENCES PVT. LTD.,
NO.28, 3rd Cross Street, Natesan Nagar(west), Puducherry-605005.
Phone: 0413-2200273, Mobile No:09488232274/275
Email: refsynbpl@gmail.com, info@refsynbio.com