Custom Synthesis

Medical Isotopes, Inc. specializes in multi-step custom synthesis for pharmaceutical companies, government, research facilities and hospitals. With more than 40 years experience in custom synthesis, our experts will prepare your compound based upon your specifications and project needs.

  • Synthesis of labeled and unlabeled standards
  • Synthesis of intermediates
  • Metabolites synthesis/characterization
  • Synthetic route development
  • Full characterization by NMR, MS and HPLC

We are always happy to speak with you about your specific needs for your application; and confirm structure and labeling, purity and enrichment before we begin.

Please call 800-374-9513 or 603-635-2255, send a fax to 603-635-2448, e-mail us or use our inquiry form for custom synthesis requests.

Terms and Conditions


Product quotations noted as custom synthesis are subject to a 30% prepayment before synthesis can begin. If there is a cancellation by the customer for any reason, the Seller can request additional payment for time and materials spent up to the date of cancellation, should it exceed the 30% prepayment.

Delivery times:

Delivery times noted on Custom Synthesis are based on a best estimate and cannot always be exact as reaction times may vary. Seller will do their best to assure delivery time is met; however, order cancellation due to delivery date delay will not constitute reason for the return of the 30% down payment.

Special Interest Products

Special Interest Products with “Inquire” Pricing:

Please ask for a quotation for the following products listed below where “inquire” is listed for pricing. These products are usually available with a longer lead time than our other products. In some cases they are considered “Custom Synthesis” and sometimes they are available but with a longer delivery time and are not considered a “Custom Synthesis”. Please inquire for the quantity you would need.


Alphabetic Listing of Custom Synthesis Products

Aliphatics: All Aliphatics
Catalog Number Product Name    
D42576 10-Undecenoic Acid Ethyl-d5 Ester Details Inquire
D42578 10-Undecenoic Acid Methyl-d3 Ester Details Inquire
Amines: Chemical Amines
Catalog Number Product Name    
D49172 Ulipristal Acetate-d3 Details Inquire
31880 6-Ureidomethyl-5,6-dihydromorphanthridine Details Inquire
Amino Acids Unlabeled: Unlabeled Amino Acids and Derivatives
Catalog Number Product Name    
31881 3-Ureidopropionic Acid Details Inquire
Anti-Cancer: Anti-cancer compounds
Catalog Number Product Name    
17745 U-67786 Details Inquire
17746 U-68415 Details Inquire
17747 U-71184 Details Inquire
17748 U-76074 Details Inquire
17749 U-78057 Details Inquire
17751 Uramustine Details Inquire
17752 Uredepa Details Inquire
17784 Urethane Details Inquire
17753 Uridine Details Inquire
17754 Ursolic Acid Details Inquire
17755 Ursolic Aldehyde Details Inquire
Aromatics and Derivatives: Aromatic Compounds
Catalog Number Product Name    
31870 Ubichromenol Details Inquire
31871 Udenafil Details Inquire
D31872 Udenafil-d7 Details Inquire
31873 Ulipristal Details Inquire
D31874 Ulipristal-d3 Details Inquire
D31879 Urapidil-d4 HCl Details Inquire
D75113 Urapidil-d6 Details Inquire
31882 β-Ureido-D-α-tosylaminopropionic Acid Details Inquire
31883 β-Ureido-L-α-tosylaminopropionic Acid Details Inquire
Biochemicals & Reagents: Biochemicals and Reagents
Catalog Number Product Name    
C1360 Urea-13C - Research Grade Details Inquire
CO1366 Urea-13C,18O Details Inquire
14876 Urea (fertilizer grade) Details Inquire
14875 Urea JP Grade (Japanese Pharmaceutical Grade) Details Inquire
D31895 Ursodeoxycholic Acid Methyl Ester-d5 Details Inquire
Biotin Derivatives: Biotin Derivatives Alphabetic Listing
Catalog Number Product Name    
31875 10-Undecenyl-phosphonic Acid Benzyl Ethyl Dister Details Inquire
Carbohydrates and Derivatives: Carbohydrates and Derivatives Alphabetic Listing
Catalog Number Product Name    
CN53558 N-[1,2-13C2]Acetyl-D-[ UL-13C6,15N]glucosamine Details Inquire
C53556 N-[1,2-13C2]Acetyl-D-[ UL-13C6]glucosamine Details Inquire
D73914 α,β-[ UL-d14]Trehalose Details Inquire
C31888 Uridine-13C5 5’-Monophosphate Disodium Salt Details Inquire
31887 Uridine 3’-Monophosphate Disodium Salt Details Inquire
C31886 Uridine 5’-Diphospho-α-D-glucose-13C6 Diammonium Salt Details Inquire
31885 Uridine 5’-Diphosphoglucose Disodium Salt Details Inquire
31884 Uridine Diphosphate Choline Ammonium Salt Details Inquire
31889 Uridylic Acid Disodium Salt (2’- and 3’- mixture) Details Inquire
Chiral Reagents: Chiral Reagents Alphabetic Listing
Catalog Number Product Name    
D31876 Unoprostone-d15 Isopropyl Ester Details Inquire
31877 Unoprostone Ethyleneketal Details Inquire
Glucuronides: Glucuronides Labeled and Unlabeled
Catalog Number Product Name    
33079 UR-144 N-(5-hydroxypentyl)"β"-D-Glucuronide Details Inquire
31893 Ursodeoxycholic Acid Acyl-β-D-glucuronide, >85% Details Inquire
Heterocycles: Heterocyclic Compounds
Catalog Number Product Name    
D33779 Urolithin A-d3 Details Inquire
Inhibitors: All Inhibitors
Catalog Number Product Name    
73856 UNC0379 Details Inquire
Nucleic Acid Derivatives - 13C, 2H, 15N: List of Nucleic Acid Derivatives - 13C, 2H, 15N
Catalog Number Product Name    
D108628 Uridine diphosphate-d7 Details Inquire
Nucleotides and Nucleosides: Nucleotides and Nucleosides Alphabetic Listing
Catalog Number Product Name    
18133 5’-UMP Na2 Details Inquire
18175 Uracil Details Inquire
CN31878 Uracil-13C,15N2 Details Inquire
18247 Uridine-5’-diphosphate disodium salt Details Inquire
C38077 Uridine-13C9,15N25’-monophosphate Sodium Salt Details Inquire
18258 UTP, 100mM Solution Details Inquire
Oligosaccharides: Oligosaccharide Compounds
Catalog Number Product Name    
72964 1-N-Ureido Tobramycin Details Inquire
49181 3-N-Ureido Tobramycin Details Inquire
Other Research Compounds: Research Compounds
Catalog Number Product Name    
33097 Ulipristal Acetate Details Inquire
D27060 rac 10-Hydroxy-1-undecen-6-one-d6 Details Inquire
D34564 Uridine Diphosphate-N-acetylglucosamine-d3 Details Inquire
CD34616 Uridine Diphosphate-N-acetylglucosamine-13C,d3 Details Inquire
CD34617 Uridine Diphosphate-N-acetylmannosamine-13C,d3 Details Inquire
D33783 Urolithin B-d3 Details Inquire
34832 USP Atorvastatin pyrrolidone analog Details Inquire
Reference Standards: Labeled Reference Standards
Catalog Number Product Name    
88215 Urea15N2 5% enrichment Details Inquire
D72966 Ursolic Acid-d3 Details Inquire
Reference Standards: Pharmaceutical Reference Standards
Catalog Number Product Name    
31890 Ursocholic Acid Details Inquire
31892 3β-Ursodeoxycholic Acid Details Inquire
31894 Ursodeoxycholic Acid Methyl Ester Details Inquire