| S.NO |
CAS NUMBER |
TYPICAL NAME |
IUPAC NAME |
| 1 |
55-18-5 |
N-Nitrosodiethylamine (NDEA) |
N-ethylnitrosoethanamine |
| 2 |
601-77-4 |
N-Nitroso-di-iso-propylamine (NDIPA) |
N-(propan-2-yl)-N-nitrosopropan-2-amine |
| 3 |
621-64-7 |
N-Nitrosodipropylamine (NDPA) |
N-propylnitrosopropan-1-amine |
| 4 |
924-16-3 |
N-Nitrosodibutylamine (NDBA) |
N-butyl-N-nitrosobutan-1-amine |
| 5 |
614-00-6 |
N-Nitroso-N-methylaniline (NMPA) |
N-methyl-N-nitrosobenzenamine |
| 6 |
930-55-2 |
N-Nitrosopyrrolidine (NPYR) |
N-nitrosopyrrolidine |
| 7 |
100-75-4 |
N-Nitrosopiperdine (NPIP) |
N-nitrosopiperidine |
| 8 |
62-75-9 |
N-Nitrosodimethylamine (NDMA) |
N-methyl-N-nitrosomethanamine |
| 9 |
16339-04-01 |
N-Ethyl-N-isopropylnitrous amide (NEIPA / NIPEA) |
N-ethyl-N-(propan-2-yl)nitrous amide |
| 10 |
61445-55-4 |
4-(Methyl(nitroso)amino)butanoic acid (NMBA) |
4-[methyl(nitroso)amino]butanoic acid |
| 11 |
111525-71-4 |
(S)-2-Azido-3,3-dimethylbutanoic acid |
(S)-2-azido-3,3-dimethylbutanoic acid |
| 12 |
100-69-6 |
2-Vinylpyridine |
2-ethenylpyridine |
| 13 |
88-12-0 |
1-Vinyl-2-pyrrolidone |
1-ethenylpyrrolidin-2-one |
| 14 |
616-45-5 |
2-Pyrrolidone |
pyrrolidin-2-one |
| 15 |
0108-05-04 |
Vinyl Acetate |
ethenyl ethanoate |
| 16 |
719300-59-1 |
Olanzapine EP Impurity C |
Olanzapine EP Impurity C |
| 17 |
174794-02-6 |
Olanzapine EP Impurity D |
Olanzapine EP Impurity D |
| 18 |
0636-09-09 |
diethyl terephthalate |
diethyl benzene-1,4-dicarboxylate |
| 19 |
282551-10-4 |
2-(2-(2-(Methylamino)ethoxy)ethoxy)ethanol |
2-[2-[2-(methylamino)ethoxy]ethoxy]ethan-1-ol |
| 20 |
943789-98-8 |
5,6-dibromo-2-indanone |
5,6-dibromo-2,3-dihydro-1H-inden-1-one |
| 21 |
713-57-5 |
4-(Ethoxycarbonyl)benzoic acid |
4-(ethoxycarbonyl)benzoic acid |
| 22 |
28860-96-0 |
3,4-O,O-Dimethyl Carbidopa |
methyl 3-methoxy-4-methoxycarbidopa |
| 23 |
5431-44-7 |
2,6-Pyridinedicarboxaldehyde |
pyridine-2,6-dicarbaldehyde |
| 24 |
28860-96-0 |
1,2,3,4-Tetrahydroisoquinolin-7-ol hydrochloride |
1,2,3,4-tetrahydroisoquinolin-7-ol hydrochloride |
| 25 |
53934-76-2 |
2-Oxo-1-pyrrolidineacetic acid |
2-(2-oxopyrrolidin-1-yl)acetic acid |
| 26 |
713-57-5 |
1,4-Benzenedicarboxylic Acid, Monoethyl Ester |
4-(ethoxycarbonyl)benzoic acid |
| 27 |
1451153-83-5 |
(1-(tert-butoxycarbonyl)-1,2,5,6-tetrahydropyridin-3-yl)boronic acid |
tert-butyl 3-boronotetrahydropyridine-1-carboxylate |
| 28 |
539-30-0 |
(Ethoxymethyl)benzene |
ethoxymethylbenzene |
| 29 |
1251732-64-5 |
tert-butyl (4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)cyclohex-3-en-1-yl)carbamate |
tert-butyl [4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)cyclohex-3-en-1-yl]carbamate |
| 30 |
958451-91-7 |
(5-(trifluoromethyl)thiophen-2-yl)boronic acid |
[5-(trifluoromethyl)thiophen-2-yl]boronic acid |
| 31 |
849069-49-4 |
4-((tert-butoxycarbonyl)amino)cyclohex-1-en-1-yl trifluoromethanesulfonate |
4-[(tert-butoxycarbonyl)amino]cyclohex-1-en-1-yl trifluoromethanesulfonate |
| 32 |
121660-37-5 |
2-Cyclopropyl-4-(4-fluorophenyl)quinoline-3-carbaldehyde |
2-cyclopropyl-4-(4-fluorophenyl)quinoline-3-carbaldehyde |
| 33 |
16285-82-8 |
Trimethoprim EP Impurity-F |
Trimethoprim EP Impurity-F |
| 34 |
1198090-73-1 |
Carvedilol-Impurity-A |
Carvedilol Impurity A |
| 35 |
72955-94-3 |
Carvedilol-Impurity-C |
Carvedilol Impurity C |
| 36 |
1391052-16-6 |
Carvedilol-Impurity-D |
Carvedilol Impurity D |
| 37 |
254452-96-5 |
Patavastain (3R,5R) Calcium salt |
calcium (3R,5R)-pitavastatin |
| 38 |
254452-92-1 |
Patavastain (3S,5S) Calcium salt |
calcium (3S,5S)-pitavastatin |
| 39 |
1808268-53-2 |
N-Fmoc-7-methyl-L-tryptophan |
N-[(9H-fluoren-9-ylmethoxy)carbonyl]-7-methyl-L-tryptophan |
| 40 |
205526-24-5 |
Fmoc-3,5-difluoro-L-phenylalanine |
N-Fmoc-3,5-difluoro-L-phenylalanine |
| 41 |
51997-51-4 |
Carvedilol USP Related Compound D |
Carvedilol USP Related Compound D |
| 42 |
162012-69-3 |
Afatinib Impurity 33 |
Afatinib Impurity 33 |
| 43 |
2413212-21-0 |
Afatinib Impurity 14 |
Afatinib Impurity 14 |
| 44 |
NA |
(S)-2-Cyclobutylmethyl-1-(4-hydroxy-benzyl)-octahydro-isoquinoline-4a-8a diol |
(S)-2-(cyclobutylmethyl)-1-[(4-hydroxyphenyl)methyl]octahydroisoquinoline-4a,8a-diol |
| 45 |
1198090-71-9 |
Carvedilol Impurity 14 |
Carvedilol Impurity 14 |
| 46 |
312753-70-1 |
2-Amino-(5,6-diethyl)-indane |
5,6-diethyl-2,3-dihydro-1H-inden-2-amine |
| 47 |
121660-37-5 |
2-cyclopropyl-4-(4-fluorophenyl)quinoline-3-Carbaldehyde |
2-cyclopropyl-4-(4-fluorophenyl)quinoline-3-carbaldehyde |
| 48 |
143469-22-1 |
2-bromo-5-(trifluoromethyl)thiophene |
2-bromo-5-(trifluoromethyl)thiophene |
| 49 |
40473-07-02 |
2-bromo-6-methoxypyridine |
2-bromo-6-methoxypyridine |
| 50 |
2197414-57-4 |
5-amino-4-(4-amino-1-oxoisoindolin-2-yl)-5-oxopentanoic acid |
5-amino-4-(4-amino-1-oxoisoindolin-2-yl)-5-oxopentanoic acid |
| 51 |
114094-45-0 |
γ-Methylaminobutyraldehyde, Diethyl Acetal |
4,4-diethoxy-N-methylbutan-1-amine |
| 52 |
334981-10-1 |
4-((Pyrrolidin-1-ylsulfonyl)methyl)aniline |
4-[(pyrrolidin-1-ylsulfonyl)methyl]aniline |
| 53 |
764667-64-3 |
5-[1-Hydroxy-2-(2,5-trifluorophenyl)ethylidene]-2,2-dimethyl-1,3-dioxane-4,6-dione |
5-[1-hydroxy-2-(2,5-trifluorophenyl)ethylidene]-2,2-dimethyl-1,3-dioxane-4,6-dione |
| 54 |
764667-65-4 |
1-(3-(trifluoromethyl)-5,6-dihydro-[1,2,4]triazolo[4,3-a]pyrazin-7(8H)-yl)-4-(2,4,5-trifluorophenyl)butane-1,3-dione |
1-[3-(trifluoromethyl)-5,6-dihydro-[1,2,4]triazolo[4,3-a]pyrazin-7(8H)-yl]-4-(2,4,5-trifluorophenyl)butane-1,3-dione |
| 55 |
767340-03-4 |
Sitagliptin Enamine Impurity |
Sitagliptin Enamine Impurity |
| 56 |
406938-39-4 |
(3R)-1-(benzo[d][1,3]dioxol-5-yl)-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylic acid |
(3R)-1-(1,3-benzodioxol-5-yl)-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylic acid |
| 57 |
24623-24-3 |
6-Nitroindan-1-one |
6-nitro-2,3-dihydro-1H-inden-1-one |
| 58 |
16499-57-3 |
7-Fluoro-4-quinazolone |
7-fluoroquinazolin-4(3H)-one |
| 59 |
162012-67-1 |
N-(3-chloro-4-fluorophenyl)-7-fluoro-6-nitroquinazolin-4-amine |
N-(3-chloro-4-fluorophenyl)-7-fluoro-6-nitroquinazolin-4-amine |
| 60 |
402855-03-2 |
4,6-Quinazolinediamine, N4-(3-chloro-4-fluorophenyl)-7-[[(3R)-tetrahydro-3-furanyl]oxy]- |
N4-(3-chloro-4-fluorophenyl)-7-[[(3R)-tetrahydrofuran-3-yl]oxy]quinazoline-4,6-diamine |
| 61 |
5153-68-4 |
(E)-1-methyl-4-(2-nitrovinyl)benzene |
1-methyl-4-[(E)-2-nitroethenyl]benzene |
| 62 |
89464-32-4 |
ethyl prop-2-yn-1-ylcarbamate |
prop-2-yn-1-yl ethylcarbamate |
| 63 |
25193-95-7 |
pyrimidin-5-ylmethanol |
pyrimidin-5-ylmethanol |
| 64 |
101346-02-5 |
5-(chloromethyl)pyrimidine |
5-(chloromethyl)pyrimidine |
| 65 |
147740-04-3 |
ethyl 1H-pyrrolo[3,4-c]pyridine-2(3H)-carboxylate |
ethyl 1H-pyrrolo[3,4-c]pyridine-2-carboxylate |
| 66 |
6000-50-6 |
2,3-dihydro-1H-pyrrolo[3,4-c]pyridine |
2,3-dihydro-1H-pyrrolo[3,4-c]pyridine |
| 67 |
4185-79-9 |
2-bromo-1,3-dinitrobenzene |
2-bromo-1,3-dinitrobenzene |
| 68 |
35757-20-1 |
2-bromo-3-nitroaniline |
2-bromo-3-nitroaniline |
| 69 |
32337-95-4 |
2-bromo-1-iodo-3-nitrobenzene |
2-bromo-1-iodo-3-nitrobenzene |
| 70 |
486460-32-6 |
(R)-3-amino-1-(3-(trifluoromethyl)-5,6-dihydro-[1,2,4]triazolo[4,3-a]pyrazin-7(8H)-yl)-4-(2,4,5-trifluorophenyl)butan-1-one |
(R)-3-amino-1-[3-(trifluoromethyl)-5,6-dihydro-[1,2,4]triazolo[4,3-a]pyrazin-7(8H)-yl]-4-(2,4,5-trifluorophenyl)butan-1-one |
| 71 |
59382-59-1 |
methyl 2-methyl-3-nitrobenzoate |
methyl 2-methyl-3-nitrobenzoate |
| 72 |
98475-07-01 |
methyl 2-(bromomethyl)-3-nitrobenzoate |
methyl 2-(bromomethyl)-3-nitrobenzoate |
| 73 |
827026-45-9 |
3-(4-nitro-1-oxoisoindolin-2-yl)piperidine-2,6-dione |
3-(4-nitro-1-oxoisoindolin-2-yl)piperidine-2,6-dione |
| 74 |
191732-72-6 |
3-(4-amino-1-oxoisoindolin-2-yl)piperidine-2,6-dione |
3-(4-amino-1-oxoisoindolin-2-yl)piperidine-2,6-dione |
| 75 |
85535-45-1 |
5-amino-2-((tert-butoxycarbonyl)amino)-5-oxopentanoic acid |
5-amino-2-[(tert-butoxycarbonyl)amino]-5-oxopentanoic acid |
| 76 |
31140-42-8 |
tert-butyl (2,6-dioxopiperidin-3-yl)carbamate |
tert-butyl (2,6-dioxopiperidin-3-yl)carbamate |
| 77 |
2353-44-8 |
3-aminopiperidine-2,6-dione |
3-aminopiperidine-2,6-dione |
| 78 |
827026-43-7 |
dimethyl 2-(4-nitro-1-oxoisoindolin-2-yl)pentanedioate |
dimethyl 2-(4-nitro-1-oxoisoindolin-2-yl)pentanedioate |
| 79 |
366452-98-4 |
4-aminoisoindolin-1-one |
4-aminoisoindolin-1-one |
| 80 |
295357-66-3 |
2-(4-amino-1-oxoisoindolin-2-yl)pentanedioic acid |
2-(4-amino-1-oxoisoindolin-2-yl)pentanedioic acid |
| 81 |
1198299-72-7 |
5-amino-4-(4-nitro-1-oxoisoindolin-2-yl)-5-oxopentanoic acid |
5-amino-4-(4-nitro-1-oxoisoindolin-2-yl)-5-oxopentanoic acid |
| 82 |
94022-96-5 |
2-(Trifluoromethyl)phenethyl alcohol |
2-[2-(trifluoromethyl)phenyl]ethan-1-ol |
| 83 |
0455-01-06 |
3-(Trifluoromethyl)phenethyl alcohol |
2-[3-(trifluoromethyl)phenyl]ethan-1-ol |
| 84 |
180635-74-9 |
3-(4-(Trifluoromethyl)phenyl)propan-1-ol |
3-[4-(trifluoromethyl)phenyl]propan-1-ol |
| 85 |
21172-41-8 |
3-(3-(Trifluoromethyl)phenyl)propanal |
3-[3-(trifluoromethyl)phenyl]propanal |
| 86 |
166947-09-7 |
3-(4-(Trifluoromethyl)phenyl)propanal |
3-[4-(trifluoromethyl)phenyl]propanal |
| 87 |
614750-84-4 |
6-Iodo-[1,2,4]triazolo[1,5-a]pyridine |
6-iodo-[1,2,4]triazolo[1,5-a]pyridine |
| 88 |
614750-81-1 |
1,2,4-Triazolo[1,5-a]pyridine-6-carboxaldehyde |
[1,2,4]triazolo[1,5-a]pyridine-6-carbaldehyde |
| 89 |
122957-57-7 |
4-(4-methyl-1,3-thiazol-5-yl)benzonitrile |
4-(4-methyl-1,3-thiazol-5-yl)benzonitrile |
| 90 |
2308507-34-6 |
tert-butyl 4-(4-methylthiazol-5-yl)benzylcarbamate |
tert-butyl N-[[4-(4-methyl-1,3-thiazol-5-yl)phenyl]methyl]carbamate |
| 91 |
668980-99-2 |
6-Bromo-3-isopropyl-[1,2,4]triazolo[4,3-a]pyridine hydrochloride |
6-bromo-3-(propan-2-yl)[1,2,4]triazolo[4,3-a]pyridine hydrochloride |
| 92 |
459448-04-5 |
3-Isopropyl[1,2,4]triazolo[4,3-a]pyridine-6-carbaldehyde |
3-(propan-2-yl)[1,2,4]triazolo[4,3-a]pyridine-6-carbaldehyde |
| 93 |
5888-51-7 |
4-Ethyl-1,2-dimethoxybenzene |
1-ethyl-2,3-dimethoxybenzene |
| 94 |
60373-70-8 |
5-ETHYLBENZO[D][1,3]DIOXOLE |
5-ethyl-1,3-benzodioxole |
| 95 |
62052-49-7 |
6-Methylbenzo[d][1,3]dioxol-5-amine |
6-methyl-1,3-benzodioxol-5-amine |
| 96 |
New molecule |
3-chloro-5-ethyl-2-methoxyaniline |
3-chloro-5-ethyl-2-methoxyaniline |
| 97 |
New molecule |
1-(5-ethyl-2-methoxyphenyl)piperazine |
1-(5-ethyl-2-methoxyphenyl)piperazine |
| 98 |
38608-07-0 |
Benzo[d][1,3]dioxole-5,6-diamine |
1,3-benzodioxole-5,6-diamine |
| 99 |
38608-07-0 |
3-Chloro-5-ethyl-6-hydroxy-2-methoxybenzoic acid |
3-chloro-5-ethyl-6-hydroxy-2-methoxybenzoic acid |
| 100 |
96-33-3 |
Methyl acrylate |
methyl prop-2-enoate |
| 101 |
139585-50-5 |
4-CHLORO-2-TRIMETHYLSILYLPYRIDINE |
4-chloro-2-(trimethylsilyl)pyridine |
| 102 |
19524-08-04 |
4-Chloro-3-methylpyridine hydrochloride |
4-chloro-3-methylpyridine hydrochloride |
| 103 |
114077-82-6 |
4-chloropyridine-3-carboxaldehyde |
4-chloropyridine-3-carbaldehyde |
| 104 |
89380-70-1 |
4-Hydroxypyridine-3-carboxaldehyde |
4-hydroxypyridine-3-carbaldehyde |
| 105 |
75476-82-3 |
5,8-Dimethylisoquinoline |
5,8-dimethylisoquinoline |
| 106 |
19171-19-8 |
Pomalidomide |
4-amino-2-(2,6-dioxopiperidin-3-yl)isoindoline-1,3-dione |
| 107 |
191732-72-6 |
Lenalidomide |
3-(4-amino-1-oxoisoindolin-2-yl)piperidine-2,6-dione |
| 108 |
301353-96-8 |
Thalidomide impurity |
2-(2,6-dioxopiperidin-3-yl)isoindoline-1,3-dione |
| 109 |
1122-58-3 |
3-Aminophthalic acid hydrochloride |
3-aminobenzene-1,2-dicarboxylic acid hydrochloride |
| 110 |
6291-84-5 |
Dimethyl 3-aminophthalate |
dimethyl 3-aminobenzene-1,2-dicarboxylate |
| 111 |
52187-29-6 |
N-Boc Glutarimide |
tert-butyl 2,6-dioxopiperidine-3-carboxylate |
| 112 |
496-72-0 |
3,4-Diaminotoluene |
4-methylbenzene-1,2-diamine |
| 113 |
95-80-7 |
2,4-Diaminotoluene |
4-methylbenzene-1,3-diamine |
| 114 |
0615-05-04 |
2,6-Diaminotoluene |
2-methylbenzene-1,3-diamine |
| 115 |
95-70-5 |
2,5-Diaminotoluene |
4-methylbenzene-1,2-diamine |
| 116 |
95-53-4 |
o-Toluidine |
2-methylaniline |
| 117 |
108-44-1 |
m-Toluidine |
3-methylaniline |
| 118 |
106-49-0 |
p-Toluidine |
4-methylaniline |
| 119 |
95-51-2 |
2-Chlorotoluene |
1-chloro-2-methylbenzene |
| 120 |
108-41-8 |
3-Chlorotoluene |
1-chloro-3-methylbenzene |
| 121 |
106-43-4 |
4-Chlorotoluene |
1-chloro-4-methylbenzene |
| 122 |
95-49-8 |
2-Bromotoluene |
1-bromo-2-methylbenzene |
| 123 |
591-17-3 |
3-Bromotoluene |
1-bromo-3-methylbenzene |
| 124 |
106-38-7 |
4-Bromotoluene |
1-bromo-4-methylbenzene |
| 125 |
100-41-4 |
Ethylbenzene |
ethylbenzene |
| 126 |
100-42-5 |
Styrene |
ethenylbenzene |
| 127 |
98-82-8 |
Cumene |
propan-2-ylbenzene |
| 128 |
108-88-3 |
Toluene |
methylbenzene |
| 129 |
71-43-2 |
Benzene |
benzene |
| 130 |
108-90-7 |
Chlorobenzene |
chlorobenzene |
| 131 |
100-44-7 |
Benzyl chloride |
chloromethylbenzene |
| 132 |
100-47-0 |
Benzonitrile |
benzonitrile |
| 133 |
100-46-9 |
Benzylamine |
phenylmethanamine |
| 134 |
62-53-3 |
Aniline |
benzenamine |
| 135 |
108-95-2 |
Phenol |
phenol |
| 136 |
100-52-7 |
Benzaldehyde |
benzaldehyde |
| 137 |
65-85-0 |
Benzoic acid |
benzoic acid |
| 138 |
98-88-4 |
Benzoyl chloride |
benzenecarbonyl chloride |
| 139 |
98-86-2 |
Acetophenone |
1-phenylethan-1-one |
| 140 |
103-81-1 |
N-Ethylaniline |
N-ethylbenzenamine |
| 141 |
103-69-5 |
N,N-Diethylaniline |
N,N-diethylbenzenamine |
| 142 |
91-66-7 |
N,N-Dimethylaniline |
N,N-dimethylbenzenamine |
| 143 |
100-61-8 |
N-Methylaniline |
N-methylbenzenamine |
| 144 |
108-99-6 |
3-Picoline |
3-methylpyridine |
| 145 |
0109-06-08 |
2-Picoline |
2-methylpyridine |
| 146 |
108-89-4 |
4-Picoline |
4-methylpyridine |
| 147 |
110-86-1 |
Pyridine |
pyridine |
| 148 |
95-47-6 |
o-Xylene |
1,2-dimethylbenzene |
| 149 |
108-38-3 |
m-Xylene |
1,3-dimethylbenzene |
| 150 |
106-42-3 |
p-Xylene |
1,4-dimethylbenzene |
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