Cebranopadol and its Impurities
Cebranopadol developmental code GRT-6005 is an opioid analgesic. it has been used in trials studying the treatment of Pain, Neoplasms, and Chronic Pain. Reference standards of Cebranopadol API, and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.


2-(2-(1-(Dimethylamino)-1,2,3,6-tetrahydro-[1,1'-biphenyl]-4-yl)-5-fluoro-1H-indol-3-yl)ethyl acetate
2-(2-(1-(Dimethylamino)-1,2,3,6-tetrahydro-[1,1'-biphenyl]-4-yl)-5-fluoro-1H-indol-3-yl)ethyl acetate
Catalogue No.:PA 03 4751001
CAS :
NA
Molecular Formula : C26H29FN2O2
Molecular Weight : 420.53


rel-(1r,4r)-N,N-Dimethyl-4-phenyl-4',9'-dihydro-3'H-spiro[cyclohexane-1,1'-pyrano[3,4-b]indol]-4-amine
rel-(1r,4r)-N,N-Dimethyl-4-phenyl-4',9'-dihydro-3'H-spiro[cyclohexane-1,1'-pyrano[3,4-b]indol]-4-amine
Catalogue No.:PA 03 4751003
CAS :
691880-03-2
Molecular Formula : C24H28N2O
Molecular Weight : 360.5

![rel-(1r,4r)-4-([1,1'-Biphenyl]-3-yl)-6'-fluoro-N,N PA 03 4751005](https://www.pharmaffiliates.com/pimages/PA034751005.jpg)
rel-(1r,4r)-4-([1,1'-Biphenyl]-3-yl)-6'-fluoro-N,N-dimethyl-4',9'-dihydro-3'H-spiro[cyclohexane-1,1'-pyrano[3,4-b]indol]-4-amine
rel-(1r,4r)-4-([1,1'-Biphenyl]-3-yl)-6'-fluoro-N,N-dimethyl-4',9'-dihydro-3'H-spiro[cyclohexane-1,1'-pyrano[3,4-b]indol]-4-amine
Catalogue No.:PA 03 4751005
CAS :
NA
Molecular Formula : C30H31FN2O
Molecular Weight : 454.59

![rel-(1r,4r)-4-([1,1'-Biphenyl]-4-yl)-6'-fluoro-N,N PA 03 4751006](https://www.pharmaffiliates.com/pimages/PA034751006.jpg)
rel-(1r,4r)-4-([1,1'-Biphenyl]-4-yl)-6'-fluoro-N,N-dimethyl-4',9'-dihydro-3'H-spiro[cyclohexane-1,1'-pyrano[3,4-b]indol]-4-amine
rel-(1r,4r)-4-([1,1'-Biphenyl]-4-yl)-6'-fluoro-N,N-dimethyl-4',9'-dihydro-3'H-spiro[cyclohexane-1,1'-pyrano[3,4-b]indol]-4-amine
Catalogue No.:PA 03 4751006
CAS :
NA
Molecular Formula : C30H31FN2O
Molecular Weight : 454.59


2-(2-(1-(Dimethylamino)-1,2,3,6-tetrahydro-[1,1'-biphenyl]-4-yl)-5-fluoro-1H-indol-3-yl)ethan-1-ol
2-(2-(1-(Dimethylamino)-1,2,3,6-tetrahydro-[1,1'-biphenyl]-4-yl)-5-fluoro-1H-indol-3-yl)ethan-1-ol
Catalogue No.:PA 03 4751007
CAS :
1004541-42-7
Molecular Formula : C24H27FN2O
Molecular Weight : 378.49


rel-(1s,4s)-6'-Fluoro-N,N-dimethyl-4-phenyl-4',9'-dihydro-3'H-spiro[cyclohexane-1,1'-pyrano[3,4-b]indol]-4-amine
rel-(1s,4s)-6'-Fluoro-N,N-dimethyl-4-phenyl-4',9'-dihydro-3'H-spiro[cyclohexane-1,1'-pyrano[3,4-b]indol]-4-amine
Catalogue No.:PA 03 4751008
CAS :
863513-93-3
Molecular Formula : C24H27FN2O
Molecular Weight : 378.49