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IP, BP & USP Grade

In-House Impurity Standards

Custom synthesized impurity standards to pharmacopoeial specifications for pharma QC labs.

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Impurity Standards by Parent API

We supply impurity reference standards — related substances, degradation products, isomers and metabolites — for 2,392 parent drug substances. Search the API below and enquire for the specific impurity you need.

Custom Synthesis

Impurities, degradants, isomers and metabolites synthesised in-house to your specification.

Full Characterisation

Supplied with COA, NMR, MS, HPLC purity and structural elucidation data.

IP · BP · EP · USP

Standards prepared against pharmacopoeial monographs for regulatory submissions.

2,392 parent APIs

S.No.Parent API / Drug SubstanceCAS No.Enquire
1Abacavir ImpuritiesOn request
2Abacavir Hydrochloride ImpuritiesOn request
3Abaloparatide Acetate ImpuritiesOn request
4Abiraterone ImpuritiesOn request
5Abiraterone Acetate ImpuritiesOn request
6Abiraterone Hydrochloride ImpuritiesOn request
7Abiraterone Sodium ImpuritiesOn request
8Abyssomicin C ImpuritiesOn request
9Acalabrutinib Maleate ImpuritiesOn request
10Acebutolol ImpuritiesOn request
11Acebutolol Hydrochloride ImpuritiesOn request
12Aceclidine Hydrochloride ImpuritiesOn request
13Aceclofenac Impurities89796-99-6
14Acedapsone ImpuritiesOn request
15Acediasulfone ImpuritiesOn request
16Acedoben ImpuritiesOn request
17Acepromazine ImpuritiesOn request
18Acepromazine Maleate ImpuritiesOn request
19Aceprometazine Maleate ImpuritiesOn request
20Acesulfame Potassium ImpuritiesOn request
21Acetagastrodin ImpuritiesOn request
22Acetaminophen ImpuritiesOn request
23Acetarsol ImpuritiesOn request
24Acetazolamide ImpuritiesOn request
25Acetomepregenol ImpuritiesOn request
26Acetophenazine Dimaleate ImpuritiesOn request
27Acetoxyprogesterone ImpuritiesOn request
28Acetylcysteine ImpuritiesOn request
29Acetylsalicylic Acid ImpuritiesOn request
30Acetyltryptophan ImpuritiesOn request
31Acitretin ImpuritiesOn request
32Acoltremon ImpuritiesOn request
33Acotiamide Hydrochloride Monohydrate ImpuritiesOn request
34Acridine ImpuritiesOn request
35Acriflavin B ImpuritiesOn request
36Acrylic Acid Impurities79-10-7
37Acyclovir ImpuritiesOn request
38Adapalene ImpuritiesOn request
39Adefovir ImpuritiesOn request
40Adefovir Phosphate Triethylamine Salt ImpuritiesOn request
41Ademethionine Disulfate Tosylate ImpuritiesOn request
42Adenine Impurities73-24-5
43Adipic Acid Impurities124-04-9
44Admilparant ImpuritiesOn request
45Adrenaline ImpuritiesOn request
46Adrenaline Hydrochloride ImpuritiesOn request
47Aflatoxin ImpuritiesOn request
48Agomelatine ImpuritiesOn request
49Agomelatine Urea ImpuritiesOn request
50Alanine Impurities107-95-9
51Albendazole Impurities54965-21-8
52Albuterol ImpuritiesOn request
53Albuterol Sulfate ImpuritiesOn request
54Alcaftadine ImpuritiesOn request
55Aldosterone ImpuritiesOn request
56Alendronate Monosodium Monohydrate ImpuritiesOn request
57Alfaxalone ImpuritiesOn request
58Alfuzosin Hydrochloride ImpuritiesOn request
59Alimemazine ImpuritiesOn request
60Alisporivir ImpuritiesOn request
61Allantoin ImpuritiesOn request
62Allopregnanolone ImpuritiesOn request
63Allopurinol ImpuritiesOn request
64Almotriptan ImpuritiesOn request
65Almotriptan Hydrobromide ImpuritiesOn request
66Almotriptan Malate ImpuritiesOn request
67Almotriptan Sulfate ImpuritiesOn request
68Aloesone ImpuritiesOn request
69Alogliptin Benzoate ImpuritiesOn request
70Alpelisib ImpuritiesOn request
71Alphadolone ImpuritiesOn request
72Alprazolam ImpuritiesOn request
73Alprenolol Hydrochloride ImpuritiesOn request
74Alprostadil ImpuritiesOn request
75Alteplase ImpuritiesOn request
76Alverine ImpuritiesOn request
77Alvimopan Dihydrate ImpuritiesOn request
78Amantadine ImpuritiesOn request
79Ambazone Monohydrate ImpuritiesOn request
80Ambenonium Chloride Tetrahydrate ImpuritiesOn request
81Ambrisentan ImpuritiesOn request
82Ambroxol ImpuritiesOn request
83Ambroxol Hydrochloride ImpuritiesOn request
84Amelubant ImpuritiesOn request
85Amenamevir ImpuritiesOn request
86Amidotrizoic Acid Dihydrate ImpuritiesOn request
87Amikacin ImpuritiesOn request
88Amiloxate ImpuritiesOn request
89Aminolevulinic Acid Hydrochloride ImpuritiesOn request
90Amiodarone ImpuritiesOn request
91Amisulbrom ImpuritiesOn request
92Amisulpride ImpuritiesOn request
93Amitraz ImpuritiesOn request
94Amitriptyline ImpuritiesOn request
95Amitriptyline Hydrochloride ImpuritiesOn request
96Amlodipine ImpuritiesOn request
97Amlodipine Besilate ImpuritiesOn request
98Amlodipine Hydrobromide ImpuritiesOn request
99Amlodipine Mesilate ImpuritiesOn request
100Amlodipine Mesilate Monohydrate ImpuritiesOn request

Each parent API covers multiple related impurities, degradants, isomers and metabolites. Tell us the impurity name, structure or pharmacopoeial reference and we will confirm availability, quantity and lead time. Custom synthesis undertaken for impurities not held in stock.