Impurity Reference Standard - Products

Terfenadine

CAT No: CL-TFNE-01 CAS No: 50679-08-8 Mol Wt: 471.7 Mol F: C32H41NO2 Inv Status: Custom Synthesis

Chemical Name: ?(1RS)-1-[4-(1,1-Dimethylethyl)phenyl]-4-[4-(hydroxydiphenylmethyl)piperidin-1-yl]butan-1-ol (as per EP)

Terfenadine Alcohol

CAT No: CL-TFNE-02 CAS No: 76815-56-0 Mol Wt: 487.7 Mol F: C32H41NO3 Inv Status: Custom Synthesis

Chemical Name: 1-(4-(1-Hydroxy-2-methylpropan-2-yl)phenyl)-4-(4-(hydroxydiphenylmethyl)piperidin-1-yl)butan-1-ol

Terfenadine EP Impurity A

CAT No: CL-TFNE-03 CAS No: 43076-30-8 Mol Wt: 469.7 Mol F: C32H39NO2 Inv Status: Custom Synthesis

Chemical Name: 1-[4-(1,1-Dimethylethyl)phenyl]-4-[4-(hydroxydiphenylmethyl)piperidin-1-yl]butan-1-one (as per EP

Terfenadine EP Impurity B

CAT No: CL-TFNE-04 CAS No: 1632048-95-3 Mol Wt: 455.7 Mol F: C32H41NO Inv Status: Custom Synthesis

Chemical Name: ?(1RS)-1-[4-(1,1-Dimethylethyl)phenyl]-4-[4-(diphenylmethyl)piperidin-1-yl]butan-1-ol (as per EP)

Terfenadine EP Impurity C

CAT No: CL-TFNE-05 CAS No: 634901-83-0 Mol Wt: 487.7 Mol F: C32H41NO3 Inv Status: Custom Synthesis

Chemical Name: 1-[(4RS)-4-[4-(1,1-Dimethylethyl)phenyl]-4-hydroxybutyl]-4-(hydroxydiphenylmethyl)piperidine 1-oxide (as per EP)

Terfenadine EP Impurity D

CAT No: CL-TFNE-06 CAS No: 93052-68-7 Mol Wt: 453.7 Mol F: C32H39NO Inv Status: Custom Synthesis

Chemical Name: (1RS)-1-[4-(1,1-Dimethylethyl)phenyl]-4-[4-(diphenylmethylene)piperidin-1-yl]butan-1-ol ( as per EP)

Terfenadine EP Impurity E

CAT No: CL-TFNE-07 CAS No: 2514962-60-6 Mol Wt: 333.5 Mol F: C20H31NO3 Inv Status: Custom Synthesis

Chemical Name: ?1-[(4RS)-4-[4-(1,1-Dimethylethyl)phenyl]-4-hydroxybutyl]piperidine-4-carboxylic acid (as per EP)

Terfenadine EP Impurity F

CAT No: CL-TFNE-08 CAS No: 50707-13-6 Mol Wt: 435.7 Mol F: C32H37N Inv Status: Custom Synthesis

Chemical Name: 1-[4-[4-(1,1-Dimethylethyl)phenyl]but-3-enyl]-4-(diphenylmethylene)piperidine (as per EP)

Terfenadine EP Impurity G

CAT No: CL-TFNE-09 CAS No: 104953-06-2 Mol Wt: 453.7 Mol F: C32H39NO Inv Status: Custom Synthesis

Chemical Name: [1-[4-[4-(1,1-Dimethylethyl)phenyl]but-3-enyl]piperidin-4-yl]diphenylmethanol (as per EP)

Terfenadine EP Impurity H

CAT No: CL-TFNE-10 CAS No: 147158-67-6 Mol Wt: 455.7 Mol F: C32H41NO Inv Status: Custom Synthesis

Chemical Name: ?[1-[4-[4-(1,1-Dimethylethyl)phenyl]butyl]piperidin-4-yl]diphenylmethanol (as per EP)