Reference standards play a crucial role in ensuring the quality, safety, and efficacy of anti-hypertensive medications. These standards, established by regulatory authorities such as the United States Pharmacopeia (USP) or the European Pharmacopoeia (EP), provide a benchmark against which the identity, purity, strength, and other quality attributes of anti-hypertensive drugs can be measured. By using reference standards, manufacturers can confirm that their products meet the required specifications and are consistent with the approved methods of analysis. This helps to ensure that patients receive medications that are safe, effective, and of high quality, ultimately contributing to the successful management of hypertension and reducing the risk of associated complications.

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Acebutolol CS-O-11093 API Standards
Acebutolol D5 CS-T-46871 Stable Isotopes
Acebutolol D7 CS-CX-00034 Stable Isotopes
Acebutolol EP Impurity A CS-O-07084 Impurities
Acebutolol EP Impurity C CS-O-11090 Impurities
Acebutolol EP Impurity D CS-O-07087 Impurities
Acebutolol EP Impurity E CS-O-07088 Impurities
Acebutolol EP Impurity F CS-O-07089 Impurities
Acebutolol EP Impurity G CS-O-07090 Impurities
Acebutolol EP Impurity H CS-O-07091 Impurities

Acebutolol EP Impurity I CS-O-07092 Impurities
Acebutolol EP Impurity J hydro... CS-O-07093 Impurities
Acebutolol EP Impurity K CS-O-07094 Impurities
Acebutolol Hydrochloride CS-T-46869 API Standards
Alanine Valsartan CS-T-01503 Impurities
Aliskiren CS-O-00812 API Standards
Aliskiren Hemifumarate CS-O-10994 API Standards
Aliskiren Acid Impurity Sodium... CS-P-07185 Impurities
Aliskiren D6 CS-O-15070 Stable Isotopes
Aliskiren D6 hemifumarate CS-O-02668 Stable Isotopes
Aliskiren Hydrochloride CS-T-47518 API Standards
Aliskiren Michael Adduct-1 Imp... CS-P-00555 Impurities
Aliskiren Michael Adduct-2 Imp... CS-P-00556 Impurities
Alprenolol Hydrochloride CS-T-01754 API Standards
Amiloride 15N3 Hydrochloride CS-O-15078 Stable Isotopes
Amiloride for peak identificat... CS-EG-00074 EP Standards
Amiloride Hydrochloride CS-O-11592 API Standards
Amiloride Hydrochloride EP Imp... CS-O-31163 Impurities
Amiloride impurity 1 CS-EO-00119 Impurities
Amlodipin EP Impurity D CS-O-16348 Impurities
amlodipine CS-O-10834 API Standards
Amlodipine Aspartic Acid Impur... CS-P-07029 Impurities
Amlodipine Azido Impurity CS-T-04601 Impurities
Amlodipine besilate (Y0000049) CS-EG-00082 EP Standards
Amlodipine Besylate CS-O-10961 API Standards
Amlodipine D4 Maleate CS-O-02810 Stable Isotopes
Amlodipine EP Impurity A CS-O-07173 Impurities
Amlodipine EP Impurity B CS-O-07174 Impurities
Amlodipine EP Impurity C CS-O-07175 Impurities
Amlodipine EP Impurity D Oxala... CS-O-07176 Impurities
Amlodipine EP Impurity E CS-O-07177 Impurities
Amlodipine EP Impurity E Malea... CS-P-07032 Impurities
Amlodipine EP Impurity F CS-O-07178 Impurities
Amlodipine EP Impurity G CS-O-30465 Impurities
Amlodipine EP Impurity H CS-O-07180 Impurities
Amlodipine for peak identifica... CS-EG-00086 EP Standards
Amlodipine Impurity CS-P-07028 Impurities
Amlodipine Impurity 8 CS-P-07030 Impurities
Amlodipine Impurity 9 CS-EO-00053 Impurities
Amlodipine impurity B (Y000106... CS-EG-00084 EP Standards
Amlodipine Impurity F Maleate CS-P-07026 Impurities
Amlodipine impurity G (Y000107... CS-EG-00085 EP Standards
Amlodipine Maleate CS-O-03795 API Standards
Amlodipine Mannitol Adduct Ace... CS-T-93231 Impurities
Amlodipine N-Galactose CS-P-03118 Impurities
Amlodipine N-Lactoside CS-P-03120 Impurities
Azilsartan CS-T-04679 API Standards
Azilsartan D4 CS-O-10156 Stable Isotopes
Azilsartan D5 CS-O-02976 Stable Isotopes
Azilsartan impurity A CS-AQ-00121 Impurities
Azilsartan impurity B CS-AQ-00122 Impurities
Azilsartan impurity C CS-AQ-00123 Impurities
Azilsartan impurity D CS-AQ-00124 Impurities
Azilsartan impurity E CS-AQ-00125 Impurities
Azilsartan impurity F CS-AQ-00126 Impurities
Azilsartan impurity G CS-AQ-00127 Impurities
Azilsartan impurity H CS-AQ-00128 Impurities
Azilsartan impurity I CS-AQ-00129 Impurities
Azilsartan impurity J CS-AQ-00130 Impurities
Azilsartan impurity K CS-T-15855 Impurities
Azilsartan impurity L CS-T-47889 Impurities
Azilsartan impurity M CS-AQ-00133 Impurities
Azilsartan impurity N CS-AQ-00134 Impurities
Azilsartan impurity O CS-AQ-00135 Impurities
Azilsartan impurity P CS-AQ-00136 Impurities
Azilsartan medoxomil CS-O-00914 API Standards
Azilsartan Medoxomil potassium CS-O-16101 API Standards
Benazepril Acyl-β-D-glucu... CS-Y-00113 Glucuronides
Benazepril D5 CS-O-06437 Stable Isotopes
Benazepril Ethyl Ester CS-T-48570 Intermediates
Benazepril Hydrochloride CS-O-30869 API Standards
Benazepril hydrochloride D5 CS-CX-00157 Stable Isotopes
Benazepril Related Compound F CS-T-50006 Intermediates
Benazepril tert-Butyl Ester CS-T-48572 Intermediates
Benazepril tert-Butyl Ester D5 CS-T-48562 Stable Isotopes
Benazepril USP Related Compoun... CS-T-62878 Impurities
Benazeprilat CS-O-10142 API Standards
Benazeprilat D5 CS-O-06436 Stable Isotopes
Bendroflumethiazide CS-T-04916 API Standards
Bendroflumethiazide D5 CS-O-06439 Stable Isotopes
Bendroflumethiazide D7 CS-CX-00565 Stable Isotopes
Bendroflumethiazide o-isomer CS-P-00670 Impurities
Benzylhydrochlorothiazide CS-T-05674 Fine Chemicals
Bis(O-ethylbenzylamine) Catech... CS-T-48585 Impurities
Bisoprolol CS-O-00527 API Standards
Bisoprolol Alcohol Impurity CS-O-07371 Impurities
Bisoprolol Carboxylic Acid Imp... CS-O-07372 Impurities
Bisoprolol D5 Fumarate CS-O-02642 Stable Isotopes
Bisoprolol D7 (Isopropoxy-D7) ... CS-O-14432 Stable Isotopes
Bisoprolol EP Impurity A CS-O-07373 Impurities
Bisoprolol EP Impurity B CS-O-07374 Impurities
Bisoprolol EP Impurity B Hemif... CS-P-07244 Impurities
Bisoprolol EP Impurity C CS-O-07375 Impurities
Bisoprolol EP Impurity D CS-O-07376 Impurities
Bisoprolol EP Impurity F CS-O-07378 Impurities
Bisoprolol EP Impurity G CS-O-07382 Impurities
Bisoprolol EP Impurity J CS-O-07379 Impurities
Bisoprolol EP Impurity L hydro... CS-O-07383 Impurities
Bisoprolol EP Impurity M CS-O-07384 Impurities
Bisoprolol EP Impurity N CS-O-07385 Impurities
Bisoprolol EP Impurity Q CS-O-07386 Impurities
Bisoprolol EP Impurity R CS-O-07381 Impurities
Bisoprolol EP Impurity T CS-P-07245 Impurities
Bisoprolol EP Impurity U CS-P-07246 Impurities
Bisoprolol Epoxide Impurity CS-O-32003 Intermediates
Bisoprolol Ester Impurity CS-T-30287 Impurities
Bisoprolol for peak identifica... CS-EG-00198 EP Standards
Bisoprolol for system suitabil... CS-EG-00199 EP Standards
Bisoprolol fumarate CS-M-34855 API Standards
Bisoprolol fumarate (Y0000812) CS-EG-00197 EP Standards
Bisoprolol Impurity CS-P-00048 Impurities
Bisoprolol Phenol Impurity CS-P-00061 Impurities
Bumetanide CS-O-00982 API Standards
Bumetanide Butyl Ester CS-T-09106 Impurities
Bumetanide D5 CS-O-02974 Stable Isotopes
Bumetanide EP impurity B CS-T-15727 Impurities
Bumetanide EP impurity D CS-O-15614 Impurities
Bumetanide impurity 2 CS-EO-00110 Impurities
Bumetanide Lactose Adduct Impu... CS-T-93320 Impurities
Bumetanide-β-D-Glucuronid... CS-T-49958 Glucuronides
Candesartan CS-O-01145 API Standards
Candesartan Acyl-Glucuronide CS-T-70098 Glucuronides
Candesartan Benzimidazole Meth... CS-O-07473 Impurities
Candesartan Bromo N2-Trityl Im... CS-O-07475 Impurities
Candesartan cilexetil CS-O-00538 API Standards
Candesartan Cilexetil D11 CS-T-50236 Stable Isotopes
Candesartan Cilexetil Desethyl... CS-O-07477 Impurities
Candesartan Cilexetil Desethyl... CS-O-07478 Impurities
Candesartan Cilexetil EP Impur... CS-O-07479 Impurities
Candesartan Cilexetil EP impur... CS-O-11779 Impurities
Candesartan Cilexetil EP Impur... CS-O-07481 Impurities
Candesartan Cilexetil EP Impur... CS-T-15719 Impurities
Candesartan Cilexetil EP Impur... CS-O-07483 Impurities
Candesartan Cilexetil EP Impur... CS-O-07484 Impurities
Candesartan Cilexetil EP Impur... CS-O-07486 Impurities
Candesartan Cilexetil EP Impur... CS-O-07487 Impurities
Candesartan cilexetil for peak... CS-EG-00244 EP Standards
Candesartan cilexetil for syst... CS-EG-00245 EP Standards
Candesartan Cilexetil Methoxy ... CS-T-10142 Impurities
Candesartan Cilexetil N1-Trity... CS-O-07489 Impurities
Candesartan Cilexetil N2-Trity... CS-O-07491 Impurities
Candesartan D4 CS-O-06458 Stable Isotopes
Candesartan Desethyl Analog CS-O-07492 Impurities
Candesartan Ethyl Ester Deseth... CS-O-07493 Impurities
Candesartan Ethyl Ester Deseth... CS-O-07494 Impurities
Candesartan Ethyl Ester Deseth... CS-O-07495 Impurities
Candesartan Ethyl Ester N1-Cil... CS-O-07496 Impurities
Candesartan Ethyl Ester N2-Cil... CS-O-07498 Impurities
Candesartan Methyl Ester Deset... CS-O-07501 Impurities
Candesartan Methyl Ester N1-Tr... CS-O-07502 Impurities
Candesartan Methyl Ester N1-Tr... CS-O-07503 Impurities
Candesartan N1-Trityl Impurity CS-O-07506 Impurities
Candesartan N1-Trityl Methoxy ... CS-O-07507 Impurities
Candesartan N2-Ethyl Impurity CS-O-07508 Impurities
Candesartan N2-Glucuronide CS-T-50237 Glucuronides
Candesartan N2-Trityl Methoxy ... CS-O-07510 Impurities
Candesartan Nitro impurity CS-T-13960 Impurities
Candesartan-d5 CS-O-00861 Stable Isotopes
Captopril CS-O-01051 API Standards
Captopril Acid Amine Salt CS-O-07517 Impurities
Captopril EP Impurity A CS-O-07518 Impurities
Captopril EP Impurity B CS-O-07519 Impurities
Captopril EP Impurity D CS-O-07521 Impurities
Captopril EP Impurity E CS-O-07522 Impurities
Captopril EP Impurity F CS-O-07523 Impurities
Captopril EP Impurity G CS-O-07524 Impurities
Captopril EP Impurity H CS-P-07438 Impurities
Captopril EP Impurity I CS-EO-00111 Impurities
Captopril EP Impurity L CS-EO-00112 Impurities
Captopril EP Impurity M CS-EO-00113 Impurities
Captopril EP Impurity O CS-EO-00114 Impurities
Captopril Ethyl Ester CS-O-07526 Impurities
Captopril for system suitabili... CS-EG-00256 EP Standards
Captopril impurity B (Y0001219... CS-EG-00251 EP Standards
Captopril impurity C (Y0001220... CS-EG-00252 EP Standards
Captopril impurity D (Y0001221... CS-EG-00253 EP Standards
Captopril impurity J (Y0001450... CS-EG-00255 EP Standards
Captopril Impurity N CS-P-07437 Impurities
Captopril-d3 CS-Y-00038 Stable Isotopes
Carbazole CS-O-07543 Impurities
Carvedilol CS-O-07551 API Standards
Carvedilol Bis(N-benzylalkylpy... CS-T-71269 Impurities
Carvedilol Carbonyl Impurity CS-O-13510 Impurities
Carvedilol D3 CS-T-50399 Stable Isotopes
Carvedilol D4 CS-O-00801 Stable Isotopes
Carvedilol Dimer CS-O-13524 Impurities
Carvedilol EP Impurity A CS-O-07544 Impurities
Carvedilol EP Impurity A CS-T-56140 Impurities
Carvedilol EP Impurity B CS-O-07545 Impurities
Carvedilol EP Impurity D CS-O-07547 Impurities
Carvedilol Epoxide Impurity CS-O-14108 Impurities
Carvedilol for system suitabil... CS-EG-00274 EP Standards
Carvedilol Impurity 6 CS-P-02377 Impurities
Carvedilol Impurity 7 CS-P-02376 Impurities
Carvedilol Impurity C CS-O-07546 Impurities
Carvedilol Impurity D HCl salt CS-O-16316 Impurities
Carvedilol Monoalkylpyrocatech... CS-T-70686 Impurities
Carvedilol phosphate CS-O-06204 API Standards
Carvedilol Related Compound E CS-O-31213 Impurities
Carvedilol Tetra(alkylpyrocate... CS-T-70069 Impurities
Carvedilol-D5 CS-O-06468 Stable Isotopes
Carvedilol-β-D-glucuronide CS-O-05689 Glucuronides
Chlorophtalimidine CS-O-13569 Impurities
Chlorothiazide (C1700000) CS-EG-00323 EP Standards
Chlorothiazide 13C,15N2 CS-T-51004 Stable Isotopes
Chlorthalidone CS-O-00496 API Standards
Chlorthalidone D4 CS-O-06484 Stable Isotopes
Chlorthalidone EP Impurity A CS-O-13529 Impurities
Chlorthalidone EP Impurity B CS-O-03413 Impurities
Chlorthalidone EP Impurity C CS-O-13530 Impurities
Chlorthalidone EP Impurity D CS-O-13531 Impurities
Chlorthalidone EP Impurity E CS-O-13532 Impurities
Chlorthalidone EP Impurity F CS-O-13533 Impurities
Chlorthalidone EP Impurity G CS-O-31091 Impurities
Chlorthalidone EP Impurity H CS-O-13534 Impurities
Chlorthalidone EP Impurity I CS-O-13535 Impurities
Cilazapril CS-T-51127 API Standards
Cilazapril EP Impurity B CS-T-51128 Intermediates
Cilazapril EP impurity D CS-O-11089 Impurities
Cilnidipine CS-O-30551 API Standards
Cilnidipine D4 CS-O-33362 Stable Isotopes
Cilnidipine-d3 CS-T-93233 Stable Isotopes
Cilnidipine-d7 CS-P-08169 Stable Isotopes
Cis-4,5-dichloro-4,5-dimethyl-... CS-O-15099 Impurities
cis-Clevidipine Impurity 13 CS-P-08080 Impurities
Clevidipine 13CD3 CS-O-16719 Stable Isotopes
Clevidipine Butyrate CS-O-01224 API Standards
Clevidipine D7 CS-P-00383 Stable Isotopes
Clevidipine Impurity 10 CS-P-03868 Impurities
Clevidipine Impurity 11 CS-P-03869 Impurities
Clevidipine Impurity 12 CS-P-03870 Impurities
Clevidipine Impurity 13 CS-P-07577 Impurities
Clevidipine Impurity 14 CS-P-03871 Impurities
Clevidipine Impurity 15 CS-P-03872 Impurities
Clevidipine Impurity 16 CS-P-08081 Impurities
Clevidipine Impurity 2 CS-P-07578 Impurities
Clevidipine Impurity 4 CS-P-07579 Impurities
Clevidipine Impurity 5 CS-P-07580 Impurities
Clevidipine Impurity 6 CS-P-07581 Impurities
Clevidipine Impurity 7 CS-P-07575 Impurities
Clevidipine Impurity 8 CS-P-07576 Impurities
Clevidipine Impurity 9 CS-P-03874 Impurities
Clevidipine metabolite 13CD3 CS-O-20100 Stable Isotopes
CN-Desmethyl Telmisartan CS-DG-00029 Impurities
CPP-Lysine CS-O-31093 Impurities
Dehydro Bisoprolol CS-T-14793 Impurities
Dehydro Bisoprolol Hemifumarat... CS-O-07377 Impurities
Dehydro Felodipine CS-T-14897 Intermediates
Dehydro Felodipine Ester Lacto... CS-T-14908 Intermediates
Dehydro Isradipine Hydrochlori... CS-P-00392 Impurities
Dehydro lercanidipine CS-O-31096 Impurities
Dehydro Nicardipine CS-T-14925 Impurities
Dehydro Olmesartan CS-T-14958 Impurities
Dehydronifedipine CS-O-07963 Metabolites
Dehydronitroso Nifedipine CS-T-14944 Impurities
Des(oxopentyl) Valsartan Benzy... CS-T-15630 Intermediates
Des(oxopentyl) Valsartan Methy... CS-O-08380 Metabolites
Des[2-(1H-tetrazol-5-yl)] 2-Cy... CS-T-16636 Impurities
Des[2-(1H-tetrazol-5-yl)] 2-Cy... CS-T-16638 Impurities
Desbutyl Bumetanide D5 CS-T-52091 Stable Isotopes
Desethyl Amlodipine CS-O-14975 Peptides
Deshydroxy Sotalol Hydrochlori... CS-T-63083 Intermediates
Desmethyl Amlodipine CS-O-14974 Impurities
Desmethyl Carvedilol CS-O-07555 Metabolites
Desvaleryl Valsartan CS-O-15359 Metabolites
Di-acid Amlodipine CS-O-15058 Impurities
Diethyl Amlodipine besylate sa... CS-O-16051 Impurities
Di-O-benzoyl L-Tartaric Acid CS-T-17066 Fine Chemicals
Enalapril CS-O-00226 API Standards
Enalapril D5 CS-O-03367 Stable Isotopes
Enalapril D5 maleate CS-O-14398 Stable Isotopes
Enalapril Diketopiperazine Aci... CS-T-54042 Impurities
Enalapril EP Impurity A CS-T-21610 Impurities
Enalapril EP impurity A (mixtu... CS-O-32598 Impurities
Enalapril EP Impurity B CS-O-08084 Impurities
Enalapril EP Impurity D CS-O-31104 Impurities
Enalapril EP Impurity E CS-T-21621 Impurities
Enalapril EP Impurity F CS-O-15096 Metabolites
Enalapril EP Impurity G CS-T-50320 Impurities
Enalapril Ep impurity-H CS-O-15098 Metabolites
Enalapril maleate CS-O-01420 API Standards
Enalapril tert-Butyl Ester CS-T-21615 Impurities
Enalaprilat CS-O-10033 Metabolites
Enalaprilat D5 Sodium Salt CS-T-54043 Stable Isotopes
Enalaprilat dihydrate CS-T-21619 API Standards
Enalaprilat tert-Butyl Ester CS-T-21624 Metabolites
Enalaprilat-d5 (phenyl-d5) CS-O-03157 Stable Isotopes
Enalapril-d5 tert-Butyl Ester CS-T-54041 Stable Isotopes
ent-Benazepril CS-T-48567 Impurities
Eplerenone CS-O-01427 API Standards