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304-20-1

Basic Information
CAS No.: 304-20-1
Name: Hydralazine hydrochloride
Article Data: 6
Molecular Structure:
Molecular Structure of 304-20-1 (Hydralazine hydrochloride)
Formula: C8H9ClN4
Molecular Weight: 196.639
Synonyms: 1(2H)-Phthalazinone,hydrazone, monohydrochloride (9CI);Phthalazine, 1-hydrazino-,monohydrochloride (8CI);(Phthalazin-1-yl)hydrazine hydrochloride;1-Hydrazinophthalazine hydrochloride;1-Hydrazinophthalazine monohydrochloride;Apresoline hydrochloride;Apulon;Hydralazine chloride;Hydralazine monohydrochloride;Lopres;Hydralazine hcl;
EINECS: 206-151-0
Density: 1.2961 (rough estimate)
Melting Point: 273 °C
Boiling Point: 491.9 °C at 760 mmHg
Flash Point: 251.3 °C
Solubility: Soluble in water. Slightly soluble in diethyl ether and alcohol.
Appearance: white crystalline solid
Hazard Symbols: HarmfulXn
Risk Codes: 22-36/37/38
Safety: 26-36/37/39-45
Transport Information: UN 2811 6.1/PG 3
PSA: 63.10000
LogP: 1.72400
Synthetic route
119-39-1

phthalazone

304-20-1

hydralazine hydrochloride

Conditions
ConditionsYield
Stage #1: phthalazone With trichlorophosphate at 75℃; for 0.5h;
Stage #2: With hydrazine hydrate In ethanol; water at 60 - 70℃; for 2h;
Stage #3: With hydrogenchloride In ethanol; water pH=3;
65%
1044569-46-1

1-hydrazinophthalazine

304-20-1

hydralazine hydrochloride

Conditions
ConditionsYield
With hydrogenchloride In water at 70 - 80℃; Product distribution / selectivity;80%
With hydrogenchloride In water at 70 - 80℃; Product distribution / selectivity;80%
With hydrogenchloride In water at 70 - 80℃; for 0.25h; Product distribution / selectivity;65%
With hydrogenchloride Product distribution / selectivity;
19820-56-5

2-formylphenyl tosylate

304-20-1

hydralazine hydrochloride

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1.1: potassium carbonate; palladium(II) trifluoroacetate; 1,3-bis-(diphenylphosphino)propane; magnesium sulfate; t-butoxycarbonylhydrazine / acetonitrile / 21 h / 140 °C / 7500.75 Torr / Autoclave
2.1: trichlorophosphate / 0.5 h / 75 °C
2.2: 2 h / 60 - 70 °C
2.3: pH 3
View Scheme
90-02-8

salicylaldehyde

304-20-1

hydralazine hydrochloride

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1.1: potassium carbonate / acetonitrile; water / 2 h / 20 °C
2.1: potassium carbonate; palladium(II) trifluoroacetate; 1,3-bis-(diphenylphosphino)propane; magnesium sulfate; t-butoxycarbonylhydrazine / acetonitrile / 21 h / 140 °C / 7500.75 Torr / Autoclave
3.1: trichlorophosphate / 0.5 h / 75 °C
3.2: 2 h / 60 - 70 °C
3.3: pH 3
View Scheme
19064-69-8

phthalazin-1-ylamine

304-20-1

hydralazine hydrochloride

Conditions
ConditionsYield
Stage #1: phthalazin-1-ylamine With hydrogenchloride; sodium nitrite at -5℃;
Stage #2: With tin(ll) chloride; sodium sulfite
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    304-20-1

    Hydralazine hydrochloride

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    Hunan chemfish Pharmaceutical co.,Ltd.located in Lugu High-tech industral park ,Hunan province . with its own R&D center and more than 10000㎡manufacture plant . Chemfish owns

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     China (Mainland)  |  Contact Details

    Business Type:Manufacturers

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    Address:No.10048, xiangjiang centry bulding ,kaifu district ,changsha city ,Hunan

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  • SAGECHEM/ Hydralazine hydrochloride  /Manufacturer in China

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    304-20-1

    SAGECHEM/ Hydralazine hydrochloride /Manufacturer in China

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    SAGECHEM is a chemical R&D, manufacturing and distribution company in China since 2009, including pharmaceutical intermediates, agrochemical, dyestuff intermediates, organosilicone, API and etc. We also offer a full range of services in

    SAGECHEM is a chemical R&D, manufacturing and distribution company since 2009, including pharmaceutical intermediates, agrochemical, dyestuff intermediates, organosilicone, API and

  •  SAGECHEM LIMITED

     China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:+86-571-86818502

    Address:5Fl. 501Room, Tower A, New Youth Plaza, 8 Jia Shan Road, Hangzhou, China

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  • Hydralazine hydrochloride

  • Casno:

    304-20-1

    Hydralazine hydrochloride

    Min.Order: 1 Metric Ton

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    1.Applied in food field.it can improve the immune system and prolong life. 2.Appliedin cosmetic field.it can improve the skin care. 3.Applied in pharmaceutical field.it can treat various dieases. 4.Our product quality assurance will make our customer

    KAISA GROUP INC.is the enterprise which is specialize in manfacturing and exporting avariety of Chemical in China. We have the strong economic base and comprehensive technology.We

  •  KAISA GROUP INC

    United States  |  Contact Details

    Business Type:Trading Company

    Tel:15131197030

    Address:1312 17th Street Suite 1402 Denver CO 80202

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  • Hydralazine hydrochloride

  • Casno:

    304-20-1

    Hydralazine hydrochloride

    Min.Order: 1 Kilogram

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    GOLDEN PHARMA CO.,LIMITED.is a professional pharmaceutical company,our team have more than 20years expereince in pharmaceutical production and sales. we are a professional technical enterprise specializing in the R & D, production,QA regulation

    GOLDEN PHARMA CO.,LIMITED.is a professional pharmaceutical company,our team have more than 20years expereince in pharmaceutical production. Currently our major business is: 1.Con

  •  Golden Pharma Co., Limited

    China (Mainland)  |  Contact Details

    Business Type:Other

    Tel:18958062155

    Address:1

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  • Hydralazine hydrochloride

  • Casno:

    304-20-1

    Hydralazine hydrochloride

    Min.Order: 1 Metric Ton

    FOB Price:  USD $ 1.0-1.0

    We are a Union of chemistry in China, consists of chemists,engineers, laboratories,factories in China. We organize surplus capacity of R&D and production as well as custom synthesis for chemical products and chemical business project. We are supp

    We are a Union of chemistry in China, consists of chemists,engineers, laboratories,factories in China. We organize surplus capacity of R&D and production in China for chemicals cus

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    China (Mainland)  |  Contact Details

    Business Type:Trading Company

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  • Hydralazine hydrochloride

  • Casno:

    304-20-1

    Hydralazine hydrochloride

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    FOB Price:  USD $ 0.0-0.0

    ISO/factory/goodqualityAppearance:off white Storage:Dry,cool place Package:drum Application:active pharmaceutical ingredients Transportation:by air/sea/express Port:shenzhen/shanghai

    Wuhan Vanz Pharm Inc. is a manufacturer&trading company.

  •  Hubei Vanz Pharm Co.,Ltd

     China (Mainland)  |  Contact Details

    Business Type:Manufacturers

    Tel:86-27-84492310

    Address:FANHU INDUSTRY PARK

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  • Hydralazine hydrochloride

  • Casno:

    304-20-1

    Hydralazine hydrochloride

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0

    high purity lowest priceAppearance:solid or liquid Storage:in sealed air resistant place Package:drum and bag Application:for pharma use Transportation:by sea or air Port:Beijing or Guangzhou

    Kono Chem Co.,Ltd is a leading producer of standardized herbal extracts, natural active ingredients and APIs for pharmaceutical, health food and cosmetic industries. Annually, mo

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     China (Mainland)  |  Contact Details

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    Address:No.11 Daqing Road,Lianhu District,Xi’an 710082,China

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Consensus Reports

IARC Cancer Review: Animal Limited Evidence IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 24 , 1980,p. 85.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) . Reported in EPA TSCA Inventory.

Specification

This chemical is called Hydralazine hydrochloride, and its IUPAC name is phthalazin-1-ylhydrazine hydrochloride. With the molecular formula of C8H9ClN4, its classification codes are Antihypertensive; Drug / Therapeutic Agent; Mutation data; Reproductive Effect; Tumor data. The CAS registry number of this chemical is 304-20-1. Additionally, its product categories are Chemical Amines; Amines; Aromatics; Heterocycles; Inhibitors; Monoamine Oxidase. It's a direct-acting vasodilator that is used as an antihypertensive agent. 

Other characteristics of the Hydralazine hydrochloride can be summarised as followings: (1)ACD/LogP: 1.00; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 0.54; (4)ACD/LogD (pH 7.4): 0.99; (5)ACD/BCF (pH 5.5): 1.17; (6)ACD/BCF (pH 7.4): 3.31; (7)ACD/KOC (pH 5.5): 28.69; (8)ACD/KOC (pH 7.4): 81.4; (9)#H bond acceptors: 4; (10)#H bond donors: 3; (11)#Freely Rotating Bonds: 1; (12)Polar Surface Area: 32.26 Å2; (13)Flash Point: 251.3 °C; (14)Enthalpy of Vaporization: 75.87 kJ/mol; (15)Boiling Point: 491.9 °C at 760 mmHg; (16)Vapour Pressure: 8.05E-10 mmHg at 25°C. 

When you are using this chemical, please be cautious about it as the following: This chemical is irritating to eyes, respiratory system and skin. You should wear suitable protective clothing if you use it. In case of contacting with eyes, rinse immediately with plenty of water and seek medical advice.

You can still convert the following datas into molecular structure: 
1.SMILES: Cl.n2nc(c1ccccc1c2)NN
2.InChI: InChI=1/C8H8N4.ClH/c9-11-8-7-4-2-1-3-6(7)5-10-12-8;/h1-5H,9H2,(H,11,12);1H
3.InChIKey: ZUXNZUWOTSUBMN-UHFFFAOYAU

The toxicity data is as follows: 
 

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
mouse LD50 intraperitoneal 83mg/kg (83mg/kg)   Journal of Pharmacology and Experimental Therapeutics. Vol. 101, Pg. 368, 1951.
mouse LD50 intravenous 71mg/kg (71mg/kg)   Drugs in Japan Vol. -, Pg. 1006, 1995.
mouse LD50 oral 188mg/kg (188mg/kg)   Oyo Yakuri. Pharmacometrics. Vol. 3, Pg. 97, 1969.
mouse LD50 subcutaneous 73mg/kg (73mg/kg) BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD

BEHAVIORAL: EXCITEMENT

LUNGS, THORAX, OR RESPIRATION: RESPIRATORY STIMULATION
Sapporo Igaku Zasshi. Sapporo Medical Journal. Vol. 6, Pg. 362, 1954.
rat LD50 intravenous 34mg/kg (34mg/kg)   Drugs in Japan Vol. 6, Pg. 619, 1982.
rat LD50 oral 280mg/kg (280mg/kg)   Drugs in Japan Vol. -, Pg. 1006, 1995.