C17H21NO
255.35 g/mol
APIWarning
Diphenhydramine
CAS58-73-1EC200-396-7
Category
API
Compound Class
Amine
Primary Use
Pharmaceutical Raw Material
Diphenhydramine is an ether compound and a tertiary amine, primarily used as a histamine H1-receptor antagonist. It is employed as an active pharmaceutical ingredient in products with antipruritic and antitussive properties.
antipruriticantitussiveantiemetic
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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Related Compounds
StrongSame Parent
Diphenhydramine hydrochloride
CAS147-24-0
pharmaceutical raw material
StrongSame Parent
Dimenhydrinate
CAS523-87-5
pharmaceutical raw material
SimilarStructure SimilarSimilarity 0.83
4-methyldiphenhydramine
CAS19804-27-4
research compound
SimilarStructure SimilarSimilarity 0.73
Orphenadrine hydrochloride
CAS341-69-5
pharmaceutical raw material
ReferenceSame Category
Bradykinin
CAS58-82-2
pharmaceutical raw material
ReferenceSame Category
Hydrochlorothiazide
CAS58-93-5
pharmaceutical raw material
ReferenceSame Category
Chlorothiazide
CAS58-94-6
pharmaceutical raw material
ReferenceSame Category
Zuclopenthixol hydrochloride
CAS58045-23-1
pharmaceutical raw material
Safety Reference
Warning
H302Harmful if swallowed
H315Causes skin irritation
H319Causes serious eye irritation
Customs Tariff Classification
The international HS code for Diphenhydramine (CAS 58-73-1) is 2922.19.
HS code (international, 6-digit)
2922.19
EU CN code (8-digit)
2922 19 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
2-benzhydryloxy-N,N-dimethylethanamine
InChIKey
ZZVUWRFHKOJYTH-UHFFFAOYSA-N
SMILES
CN(C)CCOC(C1=CC=CC=C1)C2=CC=CC=C2
Synonyms (124)
- 2PM
- Difenhidramina [INN-Spanish]
- Diphenhydramine (JP18/INN)
- Diphenhydraminum [INN-Latin]
- Orphenadrine Citrate EP Impurity D
- 58-73-1 (free base)
- Aleryl
- Alledryl
- Allergan
- Allergan (Salt/Mix)
- Allergan B
- Allergeval
- Allergical
- Allergina
- Amidryl
- Antistominum
- Antitussive (Salt/Mix)
- Antomin
- Automin
- Bagodryl
- Baramine
- Ben-allergin
- Benachlor
- Benadrin
- Benadryl
- Benadryl (hydrochloride)
- Benapon
- Benhydramin
- Benodin
- Benodine
- Benylan
- Benzantin
- Benzantine
- Benzhydramine
- Benzhydraminum
- Benzhydril
- Benzhydroamina
- Benzhydryl
- Betramin
- Citrate, Diphenhydramine
- DIPHENHYDRAMINE [MART.]
- Debendrin
- Dermistina
- Dermodrin
- Desentol
- Diabenyl
- Diabylen
- Dibendrin
- Dibondrin
- Difedryl
- Difenhidramina
- Difenhydramin
- Difenhydramine
- Difenidramina
- Difenidramina [Italian]
- Dihidral
- Dimedrol base
- Dimedrolum
- Dimedryl
- Dimehydrinate
- Diphamine
- Diphantine
- Diphenhdyra
- Diphenhydraminum
- Diphenydramine
- Diphenylhydramin
- Diphenylhydramine
- Dobacen
- Dryistan
- Drylistan
- Dylamon
- Eldadryl (Salt/Mix)
- FAR 90X2
- Histacyl (Salt/Mix)
- Histaxin
- Hyadrine
- Ibiodral
- Medidryl
- Mephadryl
- Nausen
- Novamina
- ORPHENADRINE IMPURITY D
- Probedryl
- Restamin
- Restamin (Salt/Mix)
- Restamin (TN)
- Rigidil
- Rigidyl
- S 51
- Syntedril
- Syntodril
- diacAfylline diphAnhydramine
- diphenhydramine
- thAobrate de diphAnhydramine
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