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Nueva línea de capacidades · Estándares de referencia

Estándares de referencia de impurezas y estándares certificados de nitrosaminas

Impurezas farmacéuticas de alta pureza y estándares de referencia de N-nitrosaminas en escala de mg — sintetizados por el equipo que fabrica los APIs padres. CoA con datos de RMN, HPLC, MS y Karl Fischer.

mg scaleCoA: NMR · HPLC · MS · KF Mismo laboratorio, misma disciplina GMP que nuestros APIs

Qué preparamos

Cuatro familias, todas fabricadas internamente a escala de miligramos. Lista de disponibilidad y cotizaciones por correo electrónico.

Nitrosamine impurity standards (NDMA class)

Alta demanda

N-nitrosamine impurities reshaped global drug testing since 2019. Every batch released for a susceptible API now needs LC-MS/MS or GC-MS testing against certified reference materials — and demand for these mg-scale standards permanently outstrips supply. We manufacture nitrosamine standards and their labelled isotopic internal standards against FDA/TGA acceptable-intake frameworks.

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Pharmacopeial impurities & related substances

Alta demanda

USP and EP monographs list named related substances (e.g. Phenylephrine Impurities 1–7) for each monograph API. Registrants must resolve and quantify them; labs need the compounds themselves. Our synthesis team prepares pharmacopeial and non-compendial impurities for the sympathomimetic, antihistamine and CNS APIs we manufacture — with CoA (NMR, HPLC, MS, water content by KF). Send us the impurity list from the monograph you are working to and we will confirm what we can supply.

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Custom & work standard qualification

Off-catalogue impurities — forced-degradation products, metabolites, process-related unknowns flagged in your CoA — are quoted as custom synthesis projects (mg scale). For in-house work standards we support assignment/qualification packages aligned with USP <11> principles.

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Deuterated & 13C internal standards

Isotopically labelled analogues (e.g. d6-NDMA, 13C2-NDMA) are the quantitation backbone of LC-MS/MS nitrosamine methods — and chronically scarce. We supply labelled internal standards with full isotopic abundance data on the CoA.

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Destacados del catálogo de estándares de nitrosaminas

N-nitrosaminas de un solo isómero, sin sesgos y con pureza asignada — los compuestos frente a los que ahora se deben analizar todos los API sensibles.

CodeCompound CASFDA/TGA AI
NDMAN-Nitrosodimethylamine62-75-996.0 ng/day
NDEAN-Nitrosodiethylamine55-18-526.5 ng/day
NDPAN-Nitrosodipropylamine621-64-726.5 ng/day
NDBAN-Nitrosodi-n-butylamine924-16-326.5 ng/day
NMORN-Nitrosomorpholine59-89-2127 ng/day
NPIPN-Nitrosopiperidine100-75-41300 ng/day
NPYRN-Nitrosopyrrolidine930-55-21700 ng/day
NDIPAN-Nitrosodiisopropylamine601-77-426.5 ng/day
NEIPAN-Nitrosoethylisopropylamine16339-04-126.5 ng/day
NMBAN-Nitroso-N-methyl-4-aminobutyric acid61445-55-496.0 ng/day
NMPAN-Nitroso-N-methylaniline614-00-626.5 ng/day
NBEAN-Nitroso-N-ethylbenzylamine20689-96-718.1 ng/day
NDELAN-Nitrosodiethanolamine1116-54-71900 ng/day
MeNP1-Methyl-4-nitrosopiperazine16339-07-426.5 ng/day
NTHPN-Nitroso-1,2,3,6-tetrahydropyridine55556-92-837 ng/day
d6-NDMANDMA-d6 (internal standard)88088-25-9—
d6-NDEANDEA-d12 (internal standard)113347-50-3—

Acceptable-intake (AI) values shown are taken from the FDA CDER and TGA published tables (checked October 2026) for orientation only; regulators update them — always work to the current official list.

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Estándares de impurezas por API principal

Las denominaciones genéricas chinas coinciden en gran medida entre sales y ésteres, por lo que identificamos cada compuesto mediante su número CAS —la única clave fiable— e indicamos siempre a qué API principal pertenece cada impureza. Consulte la lista a continuación; confirme disponibilidad, presentación y precio por correo electrónico.

El CAS Registry Number™ es nuestro identificador principal; los nombres son únicamente orientativos.

Phenylephrine Hydrochloride
CAS 61-76-7
  • EP Impurity A(1R)-2-amino-1-(3-hydroxyphenyl)ethanol (norphenylephrine / norfenefrine)636-87-3
  • EP Impurity C = USP Related Compound C1-(3-hydroxyphenyl)-2-(methylamino)ethanone (phenylephrone), hydrochloride94240-17-2
  • EP Impurity D = USP Related Compound D(1R)-2-(benzylmethylamino)-1-(3-hydroxyphenyl)ethanol (benzylphenylephrine)1367567-95-0
  • EP Impurity E = USP Related Compound E2-(benzylmethylamino)-1-(3-hydroxyphenyl)ethanone (benzylphenylephrone), hydrochloride71786-67-9
  • EP Impurity A (salt form)3-(2-amino-1-hydroxyethyl)phenol hydrochloride (norphenylephrine hydrochloride)4779-94-6
  • USP Related Compound F(R)-2-methyl-1,2,3,4-tetrahydroisoquinoline-4,8-diol (hydrochloride monohydrate)1007885-60-0
  • USP Related Compound G(R)-N-(2-hydroxy-2-(3-hydroxyphenyl)ethyl)-N-methylglycine (phenylephrine carboxy analog)1094089-46-9
  • USP degradant: 3-hydroxybenzaldehyde3-hydroxybenzaldehyde100-83-4
  • USP degradant: isoquinoline 4,6-diol analog2-methyl-1,2,3,4-tetrahydroisoquinoline-4,6-diol23824-24-0
  • USP degradant: isoquinolinone analog1-(3-hydroxybenzoyl)-2-methylisoquinolin-6(2H)-oneCAS pendiente de verificación — confirmado en el CoA
  • N-Nitroso phenylephrineN-[(2R)-2-hydroxy-2-(3-hydroxyphenyl)ethyl]-N-methyl-nitrous amide (N-nitrosophenylephrine)78658-64-7
Phenylephrine Bitartrate
CAS 17162-39-9
  • USP Related Compound C (same as Phenylephrine)1-(3-hydroxyphenyl)-2-(methylamino)ethan-1-one (phenylephrone)52093-42-2
  • USP Related Compound D (same as Phenylephrine)(R)-3-{2-[benzyl(methyl)amino]-1-hydroxyethyl}phenol1367567-95-0
  • USP Related Compound E (same as Phenylephrine)2-[benzyl(methyl)amino]-1-(3-hydroxyphenyl)ethan-1-one hydrochloride71786-67-9
  • USP: Norphenylephrine (same as Phenylephrine EP Impurity A)3-(2-amino-1-hydroxyethyl)phenol hydrochloride4779-94-6
Phenylephrine base
CAS 59-42-7
  • EP Impurity A (same as Phenylephrine HCl)(1R)-2-amino-1-(3-hydroxyphenyl)ethanol (norphenylephrine)636-87-3
  • EP Impurity C (same as Phenylephrine HCl)1-(3-hydroxyphenyl)-2-(methylamino)ethanone (phenylephrone)52093-42-2
  • EP Impurity D (same as Phenylephrine HCl)(1R)-2-(benzylmethylamino)-1-(3-hydroxyphenyl)ethanol (benzylphenylephrine)1367567-95-0
  • EP Impurity E (same as Phenylephrine HCl)2-(benzylmethylamino)-1-(3-hydroxyphenyl)ethanone (benzylphenylephrone)56917-44-3
Doxylamine succinate
CAS 562-10-7
  • EP Impurity CN,N-dimethyl-2-[(1RS)-1-phenyl-1-(pyridin-2-yl)methoxy]ethan-1-amine (N-desmethyldoxylamine)1442-21-3
  • USP: 2-Benzoylpyridine = EP Impurity Dphenyl(pyridin-2-yl)methanone (2-benzoylpyridine)91-02-1
  • USP: Carbinoxamine Related Compound C (= N-desmethyldoxylamine) = EP Impurity CN,N-dimethyl-2-[phenyl(pyridin-2-yl)methoxy]ethan-1-amine (desmethyl doxylamine)1221-70-1
  • USP: Doxylamine alcohol = EP Impurity B1-phenyl-1-(pyridin-2-yl)ethan-1-ol (α-methyl-α-phenyl-2-pyridinemethanol)19490-92-7
  • USP: Doxylamine dioxide (N,N'-dioxide)N,N-dimethyl-2-(1-(1-oxidopyridin-2-yl)-1-phenylethoxy)ethan-1-amine oxide105176-70-3
  • USP: Doxylamine ethylamine N-oxideN,N-dimethyl-2-[1-phenyl-1-(pyridin-2-yl)ethoxy]ethan-1-amine oxide97143-65-2
  • USP: Doxylamine pyridine-4-yl isomer = EP Impurity AN,N-dimethyl-2-[1-phenyl-1-(pyridin-4-yl)ethoxy]ethan-1-amine873407-01-3
  • USP: Doxylamine pyridinyl N-oxide2-[1-(2-(dimethylamino)ethoxy)-1-phenylethyl]pyridine 1-oxide99430-77-0
  • N-Nitroso N,C-didesmethyl doxylamineN-nitroso-N,C-didesmethyl doxylamineCAS pendiente de verificación — confirmado en el CoA
  • N-Nitroso N-desmethyl doxylamineN-nitroso-N-desmethyl doxylamineCAS pendiente de verificación — confirmado en el CoA
Etilefrine HCL
CAS 943-17-9
  • EP/BP Impurity A2-(ethylamino)-1-(3-hydroxyphenyl)ethanone (etilefrone)22510-04-9
  • EP/BP Impurity B(1RS)-1-(3-hydroxyphenyl)-2-(methylamino)ethanol (phenylephrine, racemic)1477-63-0
  • EP/BP Impurity C(1RS)-2-amino-1-(3-hydroxyphenyl)ethanol (norfenefrine / norphenylephrine)4779-94-6
  • EP/BP Impurity D2-(benzylethylamino)-1-(3-hydroxyphenyl)ethanone (benzyletilefrone)42146-10-1
  • EP/BP Impurity E1-(3-hydroxyphenyl)ethanone (3-hydroxyacetophenone)121-71-1
  • EP/BP Impurity F (other detectable)N-benzylethanamine (benzylethylamine)14321-27-8
  • N-Nitroso etilefrineN-nitroso etilefrine78658-62-5
Norepinephrine Bitartrate
CAS 108341-18-0
  • EP Impurity A (other detectable)adrenaline (epinephrine)51-43-4
  • EP Impurity C (other detectable)dopamineCAS pendiente de verificación — confirmado en el CoA
  • EP Impurity D4-[(1R)-2-amino-1-methoxyethyl]benzene-1,2-diol (noradrenaline methyl ether)CAS pendiente de verificación — confirmado en el CoA
  • EP Impurity E2-chloro-1-(3,4-dihydroxyphenyl)ethanone (α-chloro-3,4-dihydroxyacetophenone)99-40-1
  • EP Impurity FN-benzyl-1-phenylmethanamine (dibenzylamine)CAS pendiente de verificación — confirmado en el CoA
  • EP Impurity G (other detectable)2-(dibenzylamino)-1-(3,4-dihydroxyphenyl)ethanoneCAS pendiente de verificación — confirmado en el CoA
  • USP: Arterenone (limit test) ≡ EP Impurity B2-amino-1-(3,4-dihydroxyphenyl)ethanone (noradrenalone / arterenone)499-61-6
Epinephrine (Adrenaline)
CAS 51-43-4
  • EP/BP Impurity B4-[(1R)-2-amino-1-hydroxyethyl]benzene-1,2-diol (noradrenaline)51-41-2
  • EP/BP Impurity C = USP Adrenalone1-(3,4-dihydroxyphenyl)-2-(methylamino)ethan-1-one (adrenalone)62-13-5
  • EP/BP Impurity D = USP N-Benzyl Epinephrine4-[(1R)-2-[benzyl(methyl)amino]-1-hydroxyethyl]benzene-1,2-diol (N-benzyl epinephrine)1095714-91-2
  • EP/BP Impurity E = USP N-Benzyl Adrenalone2-[benzyl(methyl)amino]-1-(3,4-dihydroxyphenyl)ethan-1-one (N-benzyl adrenalone)36467-25-1
  • EP/BP Impurity F = USP Epinephrine sulfonate(1R)-1-(3,4-dihydroxyphenyl)-2-(methylamino)ethane-1-sulfonic acid26405-77-6
  • USP: (S)-Epinephrine (enantiomeric purity)(S)-epinephrine (dexamethasone-side enantiomer)150-05-0
  • USP: Epinephrine methoxy analogmethoxy adrenaline (O-methyl epinephrine) hydrochloride74571-90-7
  • USP: Epininedeoxyepinephrine (epinine; 4-(2-(methylamino)ethyl)phenol) hydrochloride62-32-8
  • USP: Oxedrine (deoxyepinephrine)4-[1-hydroxy-2-(methylamino)ethyl]phenol (oxedrine / deoxyepinephrine)94-07-5
  • N-Nitroso epinephrineN-nitroso epinephrine3038740-97-2
  • Adrenochromeadrenochrome (3-hydroxy-1-methyl-2,3-dihydro-1H-indole-5,6-dione)54-06-8
  • USP: 4-chlorocatechol4-chlorobenzene-1,2-diol (4-chlorocatechol)2138-22-9
Epinephrine Bitartrate
CAS 51-42-3
  • EP Adrenaline Tartrate Impurity B–F (same as Adrenaline)noradrenaline / adrenalone / N-benzyl adrenaline / N-benzyl adrenalone / adrenaline sulfonic acidCAS pendiente de verificación — confirmado en el CoA
  • USP: Adrenalone1-(3,4-dihydroxyphenyl)-2-(methylamino)ethan-1-one (adrenalone) hydrochloride62-13-5
  • USP: Norepinephrine(R)-4-(2-amino-1-hydroxyethyl)benzene-1,2-diol (norepinephrine)51-41-2
  • USP: Unidentified impurity 1unidentified impurity peak 1CAS pendiente de verificación — confirmado en el CoA
Isoproterenol HCL
CAS 51-30-9
  • USP Related Compound A (= isoproterenone) ≡ EP Impurity A (= isoproterenone HCl)1-(3,4-dihydroxyphenyl)-2-[(1-methylethyl)amino]ethanone (isoproterenone), hydrochloride16899-81-3
Isoproterenol Sulfate
CAS 299-95-6
  • EP Impurity A (same as Isoproterenol HCl)1-(3,4-dihydroxyphenyl)-2-[(1-methylethyl)amino]ethanone (isoproterenone)16899-81-3
  • USP: Metaproterenol / orciprenalinemetaproterenol (orciprenaline; 5-[1-hydroxy-2-(isopropylamino)ethyl]benzene-1,3-diol) sulfateCAS pendiente de verificación — confirmado en el CoA
Synephrine Tartrate
CAS 16589-24-5
  • octopamineoctopamine (norsynephrine)770-05-8
  • phenylephrinephenylephrine59-42-7
  • tyraminetyramineCAS pendiente de verificación — confirmado en el CoA
Synephrine HCL
CAS 5985-28-4
  • synephrine enantiomers ((R)/(S))synephrine enantiomers ((R)/(S))CAS pendiente de verificación — confirmado en el CoA
  • octopamineoctopamine (±)-4-(2-amino-1-hydroxyethyl)phenol770-05-8
  • phenylephrinephenylephrine / phenylephrine hydrochloride61-76-7
Dorzolamide HCL
CAS 130693-82-2
  • EP Impurity B (4S,6R)(4S,6R)-4-(ethylamino)-6-methyl-5,6-dihydro-4H-thieno[2,3-b]thiopyran-2-sulfonamide 7,7-dioxide139066-77-6
  • EP Impurity B, (4R,6S)(4R,6S)-4-(ethylamino)-6-methyl-5,6-dihydro-4H-thieno[2,3-b]thiopyran-2-sulfonamide 7,7-dioxide149249-72-9
  • EP Impurity Cdorzolamide cyclic boronate ester adduct (C10H17BN2O6S3)CAS pendiente de verificación — confirmado en el CoA
  • USP Related Compound A = EP Impurity A (hydrochloride)(4R,6R)-4-(ethylamino)-5,6-dihydro-6-methyl-4H-thieno[2,3-b]thiopyran-2-sulfonamide-7,7-dioxide monohydrochloride (ent-dorzolamide HCl)122028-36-8
  • USP Related Compound B = EP Impurity B (hydrochloride)(4RS,6SR)-4-(ethylamino)-6-methyl-5,6-dihydro-4H-thieno[2,3-b]thiopyran-2-sulfonamide 7,7-dioxide hydrochloride120279-37-0
  • USP Related Compound D = EP Impurity D (hydrochloride)(4S,6S)-4-amino-6-methyl-5,6-dihydro-4H-thieno[2,3-b]thiopyran-2-sulfonamide 7,7-dioxide hydrochloride (N-deethyldorzolamide HCl)164455-27-0
  • Dorzolamidedorzolamide maleic ester ((n-1) adduct), C14H20N2O8S3 dimer (CAS 3127911-34-3)3127911-34-3

Cómo verificar un compuesto con nosotros

Envíenos el número CAS (y, si dispone de ella, la letra de la impureza según la monografía). Confirmamos la identidad frente a nuestra base de datos de muestras de referencia antes de emitir cualquier cotización: un CAS, un compuesto, sin ambigüedad en el nombre.

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Por qué importan los estándares de impurezas de un fabricante

Because we are the manufacturer of the parent APIs — phenylephrine, epinephrine, isoproterenol, doxylamine and their relatives — we hold the synthetic knowledge, the reference batches and the degradation profiles of their impurities. That vertical integration is why our impurity standards match the material you actually test.

Envíenos la lista de impurezas de su monografía o CoA.

Le confirmamos qué podemos suministrar, a qué pureza, en qué tamaño — con plazo de entrega, en una sola respuesta.

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