CAS 50-60-2|Phentolamine

Introduction：Basic information about CAS 50-60-2|Phentolamine, including its chemical name, molecular formula, synonyms, physicochemical properties, and safety information, etc.

Table of Contents

1. Names
2. Phentolamine BiologicalActivity
3. Chemical & Physical Properties
4. Toxicological Information
CHEMICAL IDENTIFICATION
HEALTH HAZARD DATA
ACUTE TOXICITY DATA
5. Safety Information
6. Customs
7. Synonyms

Common Name	Phentolamine
CAS Number	50-60-2	Molecular Weight	281.352
Density	1.2±0.1 g/cm3	Boiling Point	551.0±45.0 °C at 760 mmHg
Molecular Formula	C₁₇H₁₉N₃O	Melting Point	177 - 178ºC
MSDS	/	Flash Point	287.0±28.7 °C

Names

Name	phentolamine
Synonym	More Synonyms

Phentolamine BiologicalActivity

Description	Phentolamine is a potent, selective and orally active α1 adrenergic and α2 adrenergic receptor antagonist. Phentolamine can be used for the treatment of erectile dysfunction[1][2][3].
Related Catalog	Research Areas >>EndocrinologySignaling Pathways >>GPCR/G Protein >>Adrenergic Receptor
In Vivo	Phentolamine (5-20 mg/kg; i.p.) effectively inhibits the seizures elicited by strychnine (2 mg/kg, i.p.) and attenuates the seizure-potentiating effect of DOPS (4 mg/kg, i.p.) in mouse[2]. Phentolamine (1 mg/kg; i.p.) increases insulin secretion by inhibition of b-cell a2A-adrenoceptors in mouse[3]. Animal Model: WT mice[3] Dosage: 1 mg/kg Administration: IP Result: Reduced blood glucose and increased insulin levels.
References	[1]. Goldstein I I. Oral phentolamine: an alpha-1, alpha-2 adrenergic antagonist for the treatment of erectile dysfunction. Int J Impot Res. 2000 Mar;12(S1):S75-S80 [2]. Amabeoku G, et al. Strychnine-induced seizures in mice: the role of noradrenaline. Prog Neuropsychopharmacol Biol Psychiatry. 1994 Jul;18(4):753-63. [3]. Fagerholm V, et al. alpha2A-adrenoceptor antagonism increases insulin secretion and synergistically augments the insulinotropic effect of glibenclamide in mice. Br J Pharmacol. 2008 Jul;154(6):1287-96.

Chemical & Physical Properties

Density	1.2±0.1 g/cm3
Boiling Point	551.0±45.0 °C at 760 mmHg
Melting Point	177 - 178ºC
Molecular Formula	C₁₇H₁₉N₃O
Molecular Weight	281.352
Flash Point	287.0±28.7 °C
Exact Mass	281.152802
PSA	47.86000
LogP	3.60
Vapour Pressure	0.0±1.5 mmHg at 25°C
Index of Refraction	1.626
InChIKey	MRBDMNSDAVCSSF-UHFFFAOYSA-N
SMILES	Cc1ccc(N(CC2=NCCN2)c2cccc(O)c2)cc1
Storage condition	-20°C

Toxicological Information

CHEMICAL IDENTIFICATION

RTECS NUMBER :: SL0700000

CHEMICAL NAME :: Phenol, 3-(((4,5-dihydro-1H-imidazol-2-yl)methyl)(4-methylphe nyl)amino)-

CAS REGISTRY NUMBER :: 50-60-2

BEILSTEIN REFERENCE NO. :: 0272944

LAST UPDATED :: 199612

DATA ITEMS CITED :: 7

MOLECULAR FORMULA :: C17-H19-N3-O

MOLECULAR WEIGHT :: 281.39

WISWESSER LINE NOTATION :: T5M CN BUTJ B1NR CQ&R D1

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 1 gm/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: AIPTAK Archives Internationales de Pharmacodynamie et de Therapie. (Heymans Institute of Pharmacology, De Pintelaan 185, B-9000 Ghent, Belgium) V.4- 1898- Volume(issue)/page/year: 112,319,1957

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 200 mg/kg

TOXIC EFFECTS :: Sense Organs and Special Senses (Eye) - ptosis Behavioral - tremor Behavioral - ataxia

REFERENCE :: ARZNAD Arzneimittel-Forschung. Drug Research. (Editio Cantor Verlag, Postfach 1255, W-7960 Aulendorf, Fed. Rep. Ger.) V.1- 1951- Volume(issue)/page/year: 21,1727,1971

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Intravenous

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 35 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: AIPTAK Archives Internationales de Pharmacodynamie et de Therapie. (Heymans Institute of Pharmacology, De Pintelaan 185, B-9000 Ghent, Belgium) V.4- 1898- Volume(issue)/page/year: 105,317,1956

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rabbit

DOSE/DURATION :: 2 gm/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: CLDND* Compilation of LD50 Values of New Drugs. (J.R. MacDougal, Dept. of National Health and Welfare, Food and Drug Divisions, 35 John St., Ottawa, Ont., Canada)

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Subcutaneous

SPECIES OBSERVED :: Rodent - rabbit

DOSE/DURATION :: 200 mg/kg

TOXIC EFFECTS :: Peripheral Nerve and Sensation - spastic paralysis with or without sensory change Behavioral - convulsions or effect on seizure threshold

REFERENCE :: SMWOAS Schweizerische Medizinische Wochenschrift. (Schwabe & Co., Steintorst 13, 4010 Basel, Switzerland) V.50- 1920- Volume(issue)/page/year: 81,352,1951

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Intravenous

SPECIES OBSERVED :: Rodent - rabbit

DOSE/DURATION :: 28 mg/kg

TOXIC EFFECTS :: Lungs, Thorax, or Respiration - dyspnea Lungs, Thorax, or Respiration - cyanosis Lungs, Thorax, or Respiration - respiratory depression

REFERENCE :: AIPTAK Archives Internationales de Pharmacodynamie et de Therapie. (Heymans Institute of Pharmacology, De Pintelaan 185, B-9000 Ghent, Belgium) V.4- 1898- Volume(issue)/page/year: 174,243,1968 ** REPRODUCTIVE DATA **

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Intravenous

DOSE :: 100 ug/kg

SEX/DURATION :: female 8 day(s) after conception

TOXIC EFFECTS :: Reproductive - Maternal Effects - uterus, cervix, vagina

REFERENCE :: DPTHDL Developmental Pharmacology and Therapeutics. (S. Karger Pub., Inc., 79 Fifth Ave., New York, NY 10003) V.1- 1980- Volume(issue)/page/year: 7(Suppl 1),72,1984

Safety Information

Safety Phrases	S26-S36/37/39-S45-S8-S25
RIDADR	UN 3264 8/PG 2
WGK Germany	3
Packaging Group	II
Hazard Class	8
HS Code	2933290090

Customs

HS Code	2933290090
Summary	2933290090. other compounds containing an unfused imidazole ring (whether or not hydrogenated) in the structure. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Synonyms

Fentolamin

EINECS 200-053-1

MFCD00242985

Phenol, 3-(((4,5-dihydro-1H-imidazol-2-yl)methyl)(4-methylphenyl)amino)-

2-(N-[m-Hydroxyphenyl]-p-toluidinomethyl)imidazoline

Phenol, 3-[[(4,5-dihydro-1H-imidazol-2-yl)methyl](4-methylphenyl)amino]-

Phentalamine

Regitin

Phenotolamine

3-[(4,5-Dihydro-1H-imidazol-2-ylmethyl)(4-methylphenyl)amino]phenol

Dibasin

Fentolamina

Regitine

Phentolaminum

Phentolamine

3-[N-(4,5-dihydro-1H-imidazol-2-ylmethyl)-4-methylanilino]phenol

Rogitine

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