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TADALAFIL

T-10152

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Catalogue Number:	T-10152
Compound Name:	Tadalafil Impurity 103
Synonyms:	(1S,3S)-1-(benzo[d][1,3]dioxol-5-yl)-2-(2-chloroacetyl)-N-methyl-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxamide
CAS#:
Alternate CAS#:
Molecular Formula:	C₂₂H₂₀ClN₃O₄
Molecular Weight:	425.87

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T-101

Amino Tadalafil

Amino Tadalafil

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C₂₁H₁₈N₄O₄

M.W. 390.40

T-102

Amino Tadalafil

Tadalafil-d3

CAS No. 960226-55-5

C₂₂H₁₆D₃N₃O₄

M.W. 392.43

T-1078

Amino Tadalafil

Tadalafil Impurity 29

CAS No. 929100-66-3

C₂₁H₁₇N₃O₄

M.W. 375.38

T-103

Amino Tadalafil

Tadalafil

CAS No. 171596-29-5

C₂₂H₁₉N₃O₄

M.W. 389.41

T-104

Amino Tadalafil

Chloropretadalafil

CAS No. 171489-59-1

C₂₂H₁₉ClN₂O₅

M.W. 426.85

T-105

Amino Tadalafil

N-Octyl-Nortadalafil

CAS No. 1173706-35-8

C₂₉H₃₃N₃O₄

M.W. 487.60

T-106

Amino Tadalafil

N-Butyl Tadalafil

CAS No. 171596-31-9

C₂₅H₂₅N₃O₄

M.W. 431.49

T-107

Amino Tadalafil

Nor-Tadalafil

CAS No. 171596-36-4

C₂₁H₁₇N₃O₄

M.W. 375.39

T-108

Amino Tadalafil

Tadalafil Impurity 21

CAS No. 951661-85-1

C20H19N3O3

M.W. 349.39

T-109

Amino Tadalafil

Tadalafil Impurity 22

CAS No. 951661-82-8

C20H19N3O3

M.W. 349.39

T-1010

Amino Tadalafil

Tadalafil Impurity 23

CAS No. 951661-84-0

C₂₂H₂₀ClN₃O₄

M.W. 425.87

T-1011

Amino Tadalafil

Tadalafil Impurity 24

CAS No. 951661-81-7

C₂₂H₂₀ClN₃O₄

M.W. 425.87

T-1012

Amino Tadalafil

Tadalafil EP Impurity C ((6S,12R)-Tadalafil)

CAS No. 171596-28-4

C₂₂H₁₉N₃O₄

M.W. 389.41

T-1013

Amino Tadalafil

N-Ethyl Tadalafil

CAS No. 1609405-34-6

C₂₃H₂₁N₃O₄

M.W. 403.44

T-1014

Amino Tadalafil

Tadalafil EP Impurity A ((6R,12S)-Tadalafil)

CAS No. 171596-27-3

C₂₂H₁₉N₃O₄

M.W. 389.41

T-1015

Amino Tadalafil

Tadalafil EP Impurity D

C₂₂H₁₉N₃O₆

M.W. 421.41

T-1016

Amino Tadalafil

Tadalafil EP Impurity E

CAS No. 2520114-41-2

C₂₂H₁₉N₃O₆

M.W. 421.41

T-1017

Amino Tadalafil

Tadalafil Spiro-urethane Impurity (EP Impurity F)

CAS No. 2747958-44-5

C22H19N3O6

M.W. 421.41

T-1018

Amino Tadalafil

Tadalafil EP Impurity G

CAS No. 2520114-46-7

C₂₂H₁₇N₃O₅

M.W. 403.40

T-1019

Amino Tadalafil

Tadalafil EP Impurity H

CAS No. 1978322-98-3

C₂₂H₁₉N₃O₆

M.W. 421.41

T-1020

Amino Tadalafil

Tadalafil EP Impurity I (Mixture of Diastereomers)

C₂₂H₁₉N₃O₅

M.W. 405.41

T-1022

Amino Tadalafil

Acetamino Tadalafil

CAS No. 1446144-71-3

C₂₃H₂₀N₄O₅

M.W. 432.44

T-1023

Amino Tadalafil

2’-Oxo Tadalafil

CAS No. 1346602-17-2

C₂₂H₁₇N₃O₅

M.W. 403.39

T-1025

Amino Tadalafil

Tadalafil EP Impurity B ((6S,12S)-Tadalafil)

CAS No. 629652-72-8

C₂₂H₁₉N₃O₄

M.W. 389.41

T-1027

Amino Tadalafil

Tadalafil Related Compound 1

C₂₆H₂₉N₃O₅

M.W. 463.54

T-1028

Amino Tadalafil

Tadalafil Related Compound 2

CAS No. 2169996-11-4

C₂₄H₂₅N₃O₅

M.W. 435.48

T-1029

Amino Tadalafil

2-Hydroxypropyl Nortadalafil (Mixture of Diastereomers)

CAS No. 1353020-85-5

C₂₄H₂₃N₃O₅

M.W. 433.46

T-1069

Amino Tadalafil

Tadalafil Impurity 17

C₂₈H₃₃N₃O₅

M.W. 491.59

T-1030

Amino Tadalafil

Tadalafil Dichloro Impurity

CAS No. 1598416-08-0

C₂₂H₁₈Cl₂N₂O₅

M.W. 461.30

T-1031

Amino Tadalafil

Tadalafil Dimethoxy Impurity

CAS No. 1356345-67-9

C23H23N3O4

M.W. 405.45

T-1033

Amino Tadalafil

Tadalafil Impurity 54

CAS No. 171596-32-0

C₂₆H₂₅N₃O₄

M.W. 443.50

T-1034

Amino Tadalafil

Tadalafil Impurity 20

CAS No. 406938-39-4

C₁₉H₁₆N₂O₄

M.W. 336.35

T-1035

Amino Tadalafil

Tadalafil Related Compound 3

C₂₇H₂₉N₃O₄

M.W. 459.55

T-1036

Amino Tadalafil

Tadalafil Related Compound 4

C27H29N3O4

M.W. 459.55

T-1037

Amino Tadalafil

2-Hydroxyethyl Nortadalafil

C₂₃H₂₁N₃O₅

M.W. 419.44

T-1038

Amino Tadalafil

Acetaminotadalafil-d3

C23H17N4O5D3

M.W. 435.46

T-1039

Amino Tadalafil

N-Butyl Tadalafil-d9

C25H16N3O4D9

M.W. 440.5

T-1040

Amino Tadalafil

Tadalafil Impurity E-d3

C22H16N3O4D3

M.W. 392.43

T-1041

Amino Tadalafil

N-Octyl Tadalafil-d4

C29H29N3O4D4

M.W. 491.63

T-1045

Amino Tadalafil

Cyclopentyl Tadalafil-d4

C26H16N3O4D9

M.W. 452.56

T-1042

Amino Tadalafil

Chloropretadalafil-13C2-d2

C22H17ClN2O5D2

M.W. 430.85

T-1043

Amino Tadalafil

Aminotadalafil-13C2-d2

C21H16N4O4D2

M.W. 394.39

T-1044

Amino Tadalafil

N-Demethyl Tadalafil-13C2-d2

C21H15N3O4D2

M.W. 379.38

T-1047

Amino Tadalafil

Tadalafil Impurity 31

CAS No. 171596-44-4

C₂₀H₁₈N₂O₄

M.W. 350.37

T-1048

Amino Tadalafil

Tadalafil Impurity 32

CAS No. 171596-43-3

C₂₀H₁₈N₂O₄

M.W. 350.38

T-1049

Amino Tadalafil

Tadalafil N-Dipropyl Impurity

C₂₈H₃₃N₃O₅

M.W. 491.59

T-1050

Amino Tadalafil

N-Phenylpropenyl Tadalafil

CAS No. 2064212-00-4

C₃₀H₂₄N₄O₄

M.W. 504.55

T-1051

Amino Tadalafil

Tadalafil Impurity 1 HCl

CAS No. 171752-68-4

C₂₀H₁₈N₂O₄. HCl

M.W. 350.37 36.46

T-1052

Amino Tadalafil

Tadalafil Impurity 2

CAS No. 629652-40-0

C₂₂H₁₉ClN₂O₅

M.W. 426.85

T-1053

Amino Tadalafil

Tadalafil Impurity 3

CAS No. 629652-42-2

C₂₂H₁₉ClN₂O₅

M.W. 426.85

T-1055

Amino Tadalafil

Tadalafil Impurity 5

C47H45N5O8

M.W. 807.91

T-1056

Amino Tadalafil

Tadalafil Impurity 6 (N-Acetyl-D-Tryptophan)

C14H16N2O3

M.W. 260.30

T-1057

Amino Tadalafil

Tadalafil Impurity 7

CAS No. 171596-42-2

C₂₀H₁₈N₂O₄

M.W. 350.37

T-1058

Amino Tadalafil

Tadalafil Impurity 8

CAS No. 1803592-02-0

C₄₆H₄₃N₅O₁₀

M.W. 825.88

T-1059

Amino Tadalafil

Tadalafil Impurity 9

C28H33N3O5

M.W. 491.59

T-1060

Amino Tadalafil

Tadalafil Impurity 10

CAS No. 100077-49-4

C9H8O4

M.W. 180.16

T-1061

Amino Tadalafil

Tadalafil Impurity 11

CAS No. 154030-29-2

C₉H₈O₅

M.W. 196.16

T-1062

Amino Tadalafil

Tadalafil Impurity 12

CAS No. 1492563-70-8

C₉H₆O₅

M.W. 194.15

T-1063

Amino Tadalafil

Tadalafil Impurity 13

CAS No. 1370438-57-5

C19H17N3O3

M.W. 335.36

T-1064

Amino Tadalafil

Tadalafil Impurity 14

C22H17N3O5

M.W. 403.39

T-1065

Amino Tadalafil

Tadalafil Impurity 15

C₂₂H₂₁N₃O₅

M.W. 407.43

T-1066

Amino Tadalafil

Tadalafil Impurity 16

C₂₂H₂₁N₃O₅

M.W. 407.43

T-1067

Amino Tadalafil

Bisprenortadalafil

C₄₃H₃₅N₅O₉

M.W. 765.78

T-1068

Amino Tadalafil

Chloropropanoylpretadalafil

CAS No. 2459302-94-2

C₂₃H₂₁ClN₂O₅

M.W. 440.89

T-1070

Amino Tadalafil

Tadalafil Impurity 18

C₂₈H₃₃N₃O₅

M.W. 491.59

T-1071

Amino Tadalafil

Tadalafil Impurity 19

CAS No. 477970-21-1

C₂₃H₂₁N₃O₄

M.W. 403.44

T-1072

Amino Tadalafil

N-Isopropyl Tadalafil

CAS No. 171596-30-8

C₂₄H₂₃N₃O₄

M.W. 417.47

T-1073

Amino Tadalafil

Tadalafil Impurity 25 (Mixture of Diastereomers)

C₂₃H₂₁ClN₂O₅

M.W. 440.88

T-1074

Amino Tadalafil

Tadalafil Impurity 26

C₁₂H₁₁N₃O₂

M.W. 229.24

T-1075

Amino Tadalafil

Tadalafil Impurity 27

C₁₂H₁₁N₃O₂

M.W. 229.24

T-1076

Amino Tadalafil

Tadalafil Impurity 28

C₁₂H₁₃N₃O₃

M.W. 247.25

T-1077

Amino Tadalafil

Tadalafil N-indolyl Lactose

C₃₄H₃₉N₃O₁₄

M.W. 713.69

T-1079

Amino Tadalafil

Tadalafil Impurity 30

CAS No. 629652-44-4

C₂₂H₁₉ClN₂O₅

M.W. 426.85

T-1080

Amino Tadalafil

Tadalafil Impurity 33

CAS No. 2170575-40-1

C46H43N5O10

M.W. 825.88

T-1081

Amino Tadalafil

Tadalafil Impurity 34

C₂₄H₂₆N₄O₄

M.W. 434.50

T-1082

Amino Tadalafil

Tadalafil Impurity 35

CAS No. 749864-17-3

C20H18N2O4

M.W. 350.37

T-1083

Amino Tadalafil

Tadalafil Impurity 36

CAS No. 158945-78-8

C21H20N2O4

M.W. 364.40

T-1084

Amino Tadalafil

Tadalafil Impurity 37

C₂₄H₂₃N₃O₅

M.W. 433.46

T-1085

Amino Tadalafil

Tadalafil Impurity 38

CAS No. 185750-07-6

C14H15ClN2O3

M.W. 294.74

T-1086

Amino Tadalafil

Tadalafil Impurity 39

CAS No. 2058231-08-4

C21H17ClN2O5

M.W. 412.83

T-1087

Amino Tadalafil

Tadalafil Impurity 40 HCl

C23H23N3O5. HCl

M.W. 421.45 36.46

T-1088

Amino Tadalafil

Tadalafil Impurity 41

CAS No. 2058231-15-3

C₂₂H₂₁N₃O₅

M.W. 407.43

T-1089

Amino Tadalafil

Tadalafil Impurity 42

CAS No. 1598416-03-5

C₃₈H₂₈N₄O₆

M.W. 636.66

T-1091

Amino Tadalafil

Tadalafil Impurity 44

C20H19N3O3

M.W. 349.39

T-1092

Amino Tadalafil

Tadalafil Impurity 45

C20H21N3O3

M.W. 351.41

T-1093

Amino Tadalafil

Tadalafil Impurity 46

C21H19N3O4

M.W. 377.40

T-1094

Amino Tadalafil

Tadalafil Impurity 47

C₂₂H₂₁N₃O₄

M.W. 391.43

T-1095

Amino Tadalafil

Tadalafil Impurity 48

CAS No. 171489-03-5

C21H19N3O4

M.W. 377.40

T-1096

Amino Tadalafil

Tadalafil Impurity 49 HCl

C12H14N2O3. HCl

M.W. 234.26 36.46

T-1097

Amino Tadalafil

Tadalafil Impurity 105

C₂₅H₂₄N₄O₅

M.W. 460.49

T-1098

Amino Tadalafil

Tadalafil Impurity 51

C24H20ClN3O5

M.W. 465.89

T-1099

Amino Tadalafil

Tadalafil Impurity 52

C23H18Cl2N2O6

M.W. 489.31

T-10100

Amino Tadalafil

Tadalafil Impurity 53

CAS No. 477970-20-0

C23H21N3O4

M.W. 403.44

T-10101

Amino Tadalafil

Tadalafil Impurity 55

C₂₂H₂₂N₄O₃

M.W. 390.44

T-10102

Amino Tadalafil

Tadalafil Impurity 56

C₉H₆O₄

M.W. 178.14

T-10103

Amino Tadalafil

Tadalafil Impurity 57

C₂₂H₂₀N₂O₆

M.W. 408.41

T-10104

Amino Tadalafil

Tadalafil Impurity 58

C₂₂H₁₉ClN₂O₅

M.W. 426.85

T-10105

Amino Tadalafil

Tadalafil Impurity 59

C₂₄H₂₀Cl₂N₂O₆

M.W. 503.33

T-10106

Amino Tadalafil

Tadalafil Impurity 60

C₂₂H₂₀ClN₃O₄

M.W. 425.87

T-10107

Amino Tadalafil

Tadalafil Impurity 61

C₂₄H₂₁Cl₂N₃O₅

M.W. 502.35

T-10108

Amino Tadalafil

Tadalafil Impurity 62

C₂₂H₁₇N₃O₅

M.W. 403.39

T-10109

Amino Tadalafil

Tadalafil Impurity 63

CAS No. 21753-16-2

C₁₂H₁₁N₃O₂

M.W. 229.24

T-10110

Amino Tadalafil

Tadalafil Impurity 64

C₂₇H₂₇N₃O₄

M.W. 457.53

T-10111

Amino Tadalafil

Tadalafil Impurity 4

CAS No. 1598416-05-7

C₂₂H₂₀N₂O₅

M.W. 392.41

T-10112

Amino Tadalafil

Tadalafil Impurity 65

C₂₂H₁₈ClN₃O₄

M.W. 423.85

T-10136

Amino Tadalafil

Tadalafil Impurity 88

CAS No. 88755-39-9

C₁₈H₁₄O₇

M.W. 342.30

T-10113

Amino Tadalafil

Tadalafil Impurity 66

CAS No. 1598416-07-9

C₂₁H₁₈N₂O₅

M.W. 378.38

T-10114

Amino Tadalafil

Tadalafil Impurity 67

CAS No. 1863191-32-5

C₂₃H₂₁ClN₂O₅

M.W. 440.88

T-10115

Amino Tadalafil

Tadalafil Impurity 68

C₂₂H₁₇Cl₃N₂O₅

M.W. 494.020

T-10116

Amino Tadalafil

Tadalafil Impurity 69

CAS No. 515-84-4

C₄H₅Cl₃O2

M.W. 189.936

T-10117

Amino Tadalafil

Tadalafil Impurity 70

CAS No. 5345-73-3

C₃H₅Cl₂NO

M.W. 140.975

T-10118

Amino Tadalafil

Tadalafil Impurity 71

CAS No. 23170-77-6

C₃H4_Cl₃NO

M.W. 174.936

T-10119

Amino Tadalafil

Tadalafil Impurity 72

C₂₄H₂₅N₃O₅

M.W. 435.48

T-10120

Amino Tadalafil

Tadalafil Impurity 73

C₂₃H₂₄N₄O₄

M.W. 420.47

T-10121

Amino Tadalafil

Tadalafil Impurity 74

C₂₂H₁₇N₃O₅

M.W. 403.39

T-10122

Amino Tadalafil

Tadalafil Impurity 75

C₂₂H₁₉N₃O₅

M.W. 405.41

T-10123

Amino Tadalafil

Tadalafil Impurity 76

CAS No. 58979-02-5

C₁₃H₁₂O₄

M.W. 232.235

T-10124

Amino Tadalafil

Tadalafil Impurity 77

C₂₀H₁₈O₆

M.W. 354.358

T-10125

Amino Tadalafil

Tadalafil Impurity 78

C₂₇H₂₄O₈

M.W. 476.481

T-10126

Amino Tadalafil

Tadalafil Impurity 79

C₃₄H₃₀O₁₀

M.W. 598.604

T-10127

Amino Tadalafil

Tadalafil Impurity 80

C₂₄H₂₀Cl₂N₂O₆

M.W. 503.332

T-10128

Amino Tadalafil

Tadalafil Impurity 81

C₂₂H₂₁N₃O₅

M.W. 407.426

T-10129

Amino Tadalafil

Tadalafil Impurity 82

C₄₀H₃₅N₅O₆

M.W. 681.75

T-10130

Amino Tadalafil

Tadalafil Impurity 83 HCl

CAS No. 14907-27-8

C₁₂H₁₄N₂O₂. HCl

M.W. 218.26 36.46

T-10131

Amino Tadalafil

Tadalafil Impurity 84

CAS No. 22220-03-7

C₁₃H₁₁F₃N₂O₃

M.W. 300.24

T-10132

Amino Tadalafil

Tadalafil Impurity 85

CAS No. 38082-70-1

C₆H₁₂N₂O₃

M.W. 160.17

T-10133

Amino Tadalafil

Tadalafil Impurity 86

CAS No. 1795790-92-9

C₂₂H₁₉N₃O₅

M.W. 405.41

T-10134

Amino Tadalafil

Tadalafil Impurity 87

CAS No. 691871-71-3

C₂₈H₂₃N₃O₄

M.W. 465.51

T-10135

Amino Tadalafil

Tadalafil Impurity 89

CAS No. 27738-46-1

C₉H₈O₅

M.W. 196.16

T-10137

Amino Tadalafil

Tadalafil Impurity 90

C₂₁H₂₀N₂O₆

M.W. 396.40

T-10138

Amino Tadalafil

Tadalafil Impurity 91

CAS No. 395665-87-9

C₂₃H₂₁ClN₂O₅

M.W. 440.88

T-10139

Amino Tadalafil

Tadalafil Impurity 92 HCl

C₂₂H₂₁N₃O₅. HCl

M.W. 407.43 36.46

T-10140

Amino Tadalafil

Tadalafil Impurity 93

CAS No. 378788-16-0

C₂₂H₂₁N₃O₄

M.W. 391.43

T-10141

Amino Tadalafil

Tadalafil Impurity 94

CAS No. 378788-18-2

C₂₈H₂₉N₃O₁₀

M.W. 567.55

T-10142

Amino Tadalafil

Tadalafil Impurity 95

C₂₆H₃₀N₄O₄

M.W. 462.55

T-10143

Amino Tadalafil

Tadalafil Impurity 96 HCl

C₁₄H₁₇N₃O₃. HCl

M.W. 275.31 36.46

T-10144

Amino Tadalafil

N-Nitroso Tadalafil

C₂₂H₁₈N₄O₅

M.W. 418.41

T-10145

Amino Tadalafil

Tadalafil-13C2-d3

C₂₀¹³C₂H16D₃N₃O₄

M.W. 394.41

T-10146

Amino Tadalafil

Tadalafil Impurity 97

C₂₃H₂₂N₄O₄

M.W. 418.45

T-10147

Amino Tadalafil

Tadalafil Impurity 98

C₂₃H₂₃ClN₄O₄

M.W. 454.91

T-10148

Amino Tadalafil

Tadalafil Impurity 99

C₂₄H₂₇N₅O₄

M.W. 449.51

T-10149

Amino Tadalafil

Tadalafil Impurity 100

C₂₃H₂₂ClN₃O₅

M.W. 455.90

T-10150

Amino Tadalafil

Tadalafil Impurity 101

C₂₄H₂₆N₄O₅

M.W. 450.50

T-10151

Amino Tadalafil

Tadalafil Impurity 102

C₂₂H₂₀ClN₃O₄

M.W. 425.87

T-10153

Amino Tadalafil

N1-Nitroso Tadalafil Impurity 1

C₂₀H₁₇N₃O₅

M.W. 379.37

T-10154

Amino Tadalafil

N2-Nitroso Tadalafil Impurity 1

C₂₀H₁₇N₃O₅

M.W. 379.37

T-10155

Amino Tadalafil

N1,N2-Dinitroso Tadalafil Impurity 1

C₂₀H₁₆N₄O₆

M.W. 408.37

T-10156

Amino Tadalafil

N-Nitroso Chloropre Tadalafil

C₂₂H₁₈ClN₃O₆

M.W. 455.85

T-10157

Amino Tadalafil

(R,S)-Amino Tadalafil

CAS No. 1093940-68-1

C₂₁H₁₈N₄O₄

M.W. 390.40

T-10158

Amino Tadalafil

Tadalafil Impurity 104

C₂₁H₁₉N₃O₃

M.W. 361.40

T-10160

Amino Tadalafil

Tadalafil Impurity 106

CAS No. 1978323-00-0

C₂₂H₁₇N₃O₅

M.W. 403.39

T-10161

Amino Tadalafil

Tadalafil Hydroxypiperidone

CAS No. 1978322-99-4

C₂₂H₁₉N₃O₆

M.W. 421.41

T-10162

Amino Tadalafil

Tadalafil Impurity 107

C₂₂H₂₁N₃O₅

M.W. 407.43

T-10163

Amino Tadalafil

N-Nitroso 2-Thiazolylamine

C₃H₄N₂OS

M.W. 116.14

T-10164

Amino Tadalafil

Tadalafil Impurity 108

CAS No. 771-39-1

C₈H₆N₂O₂

M.W. 162.15

T-10165

Amino Tadalafil

Tadalafil Impurity 109

CAS No. 1081513-87-2

C₁₈H₂₅N₃O₅

M.W. 363.41

T-10166

Amino Tadalafil

Tadalafil Impurity 110 (Mixture of Diastereomers)

C₂₂H₂₁N₃O₅

M.W. 407.43

T-10167

Amino Tadalafil

Tadalafil Impurity 111

C₁₈H₂₃N₅O₄

M.W. 373.41

T-10168

Amino Tadalafil

Tadalafil Impurity 112

CAS No. 1220393-12-3

C₂₂H₁₉N₃O₅

M.W. 405.41

T-10169

Amino Tadalafil

N-Nitroso Tadalafil Impurity 3

C₂₂H₁₈ClN₃O₆

M.W. 455.85

T-10170

Amino Tadalafil

N2-Nitroso Tadalafil Impurity 32

C₂₀H₁₇N₃O₅

M.W. 379.37

T-10171

Amino Tadalafil

Tadalafil Impurity 113

C₂₂H₁₉ClN₂O₅

M.W. 426.85

T-10172

Amino Tadalafil

Tadalafil Impurity 114

C₂₁H₁₆Cl₂N₂O₅

M.W. 447.27

T-10173

Amino Tadalafil

Tadalafil Impurity 115

C₂₂H₁₉Cl₂N₃O₄

M.W. 460.31

T-10174

Amino Tadalafil

Tadalafil Impurity 116

CAS No. 7797-83-3

C₈H₆O₃

M.W. 150.13