Impurity Reference Standard - Products

Fluorouracil EP Impurity B

CAT No: CL-FROC-01 CAS No: 496-76-4 Mol Wt: 128.1 Mol F: C4H4N2O3 Inv Status: Custom Synthesis

Chemical Name: Dihydropyrimidine-2,4,5(3H)-trione (isobarbituric acid or 5-hydroxyuracil)

Fluorouracil EP Impurity C

CAT No: CL-FROC-02 CAS No: 66-22-8 Mol Wt: 112.1 Mol F: C4H4N2O2 Inv Status: Custom Synthesis

Chemical Name: Pyrimidine-2,4(1H,3H)-dione (uracil)

Fluorouracil EP Impurity D

CAT No: CL-FROC-03 CAS No: 6623-81-0 Mol Wt: 142.1 Mol F: C5H6N2O3 Inv Status: Custom Synthesis

Chemical Name: 5-Methoxypyrimidine-2,4(1H,3H)-dione (5-methoxyuracil)

Fluorouracil EP Impurity E

CAT No: CL-FROC-04 CAS No: 1820-81-1 Mol Wt: 146.5 Mol F: C4H3ClN2O2 Inv Status: Custom Synthesis

Chemical Name: 5-Chloropyrimidine-2,4(1H,3H)-dione (5-chlorouracil)

Fluorouracil EP Impurity F

CAT No: CL-FROC-05 CAS No: 56177-80-1 Mol Wt: 158.1 Mol F: C6H7FN2O2 Inv Status: Custom Synthesis

Chemical Name: 2-Ethoxy-5-fluoropyrimidin-4(1H)-one (2-ethoxy-5-fluorouracil)

Fluorouracil EP Impurity G

CAT No: CL-FROC-06 CAS No: 57-13-6 Mol Wt: 60.1 Mol F: CH4N2O Inv Status: In Stock

Chemical Name: Carbamide (urea)

Fluorouracil EP Impurity A

CAT No: CL-FROC-07 CAS No: 67-52-7 Mol Wt: 128.1 Mol F: C4H4N2O3 Inv Status: Custom Synthesis

Chemical Name: Pyrimidine-2,4,6(1H,3H,5H)-trione (barbituric acid)

4,6-Dichloro-2-hydroxypyrimidine

CAT No: CL-FROC-08 CAS No: 6297-80-9 Mol Wt: 165 Mol F: C4H2Cl2N2O Inv Status: Custom Synthesis

Chemical Name: 4,6-Dichloropyrimidin-2(1H)-one

4,6-Dihydroxy-5-Methoxypyrimidine

CAT No: CL-FROC-09 CAS No: 5193-84-0 Mol Wt: 142.1 Mol F: C5H6N2O3 Inv Status: Custom Synthesis

Chemical Name: 6-Hydroxy-5-methoxypyrimidin-4(3H)-one

5,6-Diamino-1,3-dimethyluracil

CAT No: CL-FROC-10 CAS No: 5440-00-6 Mol Wt: 170.2 Mol F: C6H10N4O2 Inv Status: Custom Synthesis

Chemical Name: 5,6-Diamino-1,3-dimethylpyrimidine-2,4(1H,3H)-dione

5-Fluorodihydropyrimidine-2,4-Dione

CAT No: CL-FROC-11 CAS No: 696-06-0 Mol Wt: 132.1 Mol F: C4H5FN2O2 Inv Status: Custom Synthesis

Chemical Name: 5-Fluorodihydropyrimidine-2,4(1H,3H)-dione

6-Chloro-1,3-Dimethyluracil

CAT No: CL-FROC-12 CAS No: 6972-27-6 Mol Wt: 174.6 Mol F: C6H7ClN2O2 Inv Status: Custom Synthesis

Chemical Name: 6-Chloro-1,3-dimethylpyrimidine-2,4(1H,3H)-dione

Fluorouracil Dimer Impurity

CAT No: CL-FROC-13 CAS No: NA Mol Wt: 240.2 Mol F: C8H5FN4O4 Inv Status: Custom Synthesis

Chemical Name: 5-Fluoro-2H-[1,5'-bipyrimidine]-2,2',4',6(1'H,3H,3'H)-tetraone

Fluorouracil Impurity Mixture CRS (Containing Impurities D and E)

CAT No: CL-FROC-14 CAS No: NA Mol Wt: 142.1 : 146.5 Mol F: C5H6N2O3 : C4H3ClN2O2 Inv Status: Custom Synthesis

Chemical Name: 5-Chloropyrimidine-2,4(1H,3H)-dione compound with 5-methoxypyrimidine-2,4(1H,3H)-dione (1:1)

Fluorouracil Impurity 1

CAT No: CL-FROC-15 CAS No: 13794-72-4 Mol Wt: 206.2 Mol F: C10H10N2O3 Inv Status: Custom Synthesis

Chemical Name: 6,7-Dimethoxyquinazolin-4(1H)-one

Fluorouracil Impurity 2

CAT No: CL-FROC-16 CAS No: 5653-40-7 Mol Wt: 197.2 Mol F: C9H11NO4 Inv Status: Custom Synthesis

Chemical Name: 2-Amino-4,5-dimethoxybenzoic acid

Fluorouracil Impurity 3

CAT No: CL-FROC-17 CAS No: 26759-46-6 Mol Wt: 211.2 Mol F: C10H13NO4 Inv Status: Custom Synthesis

Chemical Name: Methyl 2-amino-4,5-dimethoxybenzoate

Type:Impurity Reference Standard

API NAME:Fluorouracil

Total Products: 17

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