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Methapyrilene Hydrochloride

HCID 8667
NotesReactions
Basic informationOverviewNames & identifiersPropertiesSafety & regulationChemistry & industryRelated reactionsCompound notes
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Basic information

CAS
135-23-9
Standard SMILES
CN(C)CCN(Cc1cccs1)c1ccccn1.Cl
InChIKey
BONORRGKLJBGRV-UHFFFAOYSA-N
Molecular formula
C14H19N3S.ClH
Average molar mass
297.8 g/mol
Monoisotopic mass
297.10664632

Overview

Methapyrilene hydrochloride appears as white crystalline powder or solid with a faint odor. Bitter taste. pH (aqueous solution) 5.5. (NTP, 1992)

Names & identifiers

Preferred name
Methapyrilene Hydrochloride
IUPAC
N,N-dimethyl-N'-pyridin-2-yl-N'-(thiophen-2-ylmethyl)ethane-1,2-diamine;hydrochloride
English name
Methapyrilene hydrochloride
Molecular formula
C14H20ClN3S
Molecular weight
297.85

Names & synonyms

METHAPYRILENE HYDROCHLORIDE135-23-9Methapyrilene HClMethoxyleneBlue LineThenylpyramine hydrochlorideThenylene hydrochlorideDTXSID0020818methypyrilene hydrochlorideNSC-75841000S42N58OM2-((2-(Dimethylamino)ethyl)-2-thenylamino)pyridine monohydrochloride
Show more names
dozarbarhistcoryzolbluelinecapathynhistafedmethaconsomnicaps
DTXCID40818CHEBI:38213METHAPYRILENE HYDROCHLORIDE [MI]METHAPYRILENE HYDROCHLORIDE [VANDF]METHAPYRILENE HYDROCHLORIDE [WHO-DD]cohistine2-((2-(dimethylamino)ethyl)-2-thenylamino)pyridine hydrochloride1,2-Ethanediamine, N1,N1-dimethyl-N2-2-pyridinyl-N2-(2-thienylmethyl)-, hydrochloride (1:1)

Database identifiers

CAS
135-23-9
PubChem CID
8667
DTXSID
DTXSID0020818

Properties

Computed structural properties

Topological polar surface area
47.6 Ų
Hydrogen bond donors
1
Hydrogen bond acceptors
4
Rotatable bonds
6
Heavy atoms
19
Formal charge
0
Complexity
235

Experimental & physicochemical properties

Solubility · 2 items

greater than or equal to 100 mg/mL at 68.9 °F (NTP, 1992)

>44.7 [ug/mL] (The mean of the results at pH 7.4)

Melting Point324 °F (NTP, 1992)
Physical DescriptionMethapyrilene hydrochloride appears as white crystalline powder or solid with a faint odor. Bitter taste. pH (aqueous solution) 5.5. (NTP, 1992)
Collision Cross Section157.2 Ų [M+H]+ [CCS Type: TW; Method: calibrated with polyalanine and drug standards]

Physicochemical properties

Melting point
162 ° · 162°
storage temp.
room temp
solubility
15 mg/ml,DMSO: · DMF: 15 mg/ml,DMSO: 10 mg/ml,Ethanol: 1 mg/ml,PBS (pH 7.2): 1 mg/ml
form
Solid
color
Off-white to yellow
Stability
Hygroscopic
Major Application
clinical testing

Safety & regulation

Safety information is for reference only and does not replace the supplier’s Safety Data Sheet (SDS), applicable regulations, or professional assessment.

GHS classification

GHS Classification · 4 items

Danger

H301 (92.9%): Toxic if swallowed [Danger Acute toxicity, oral]

P264, P270, P301+P316, P321, P330, P405, and P501 (click each P-code to see the statement)

Aggregated GHS information provided per 42 reports by companies from 2 notifications to the ECHA C&L Inventory.

Hazard information

DOT LabelPoison
Fire HazardsFlash point data for this chemical are not available; however, it is probably combustible. (NTP, 1992)
Health Hazards · 1 item

SYMPTOMS: Symptoms of exposure to this compound include gastritis. Other symptoms include excitement, convulsions, hyperpyrexia, cerebral edema, depression and renal tubular necrosis. Ingestion of this type of compound may cause drowsiness, headache, dryness of the mouth, nausea, tachycardia, urinary retention, disorientation, nervousness, staggering gait, hallucinations, stupor, coma, hyperreflexia, tremors, nystagmus and hyperthermia. Other symptoms of exposure to this type of compound are mild sedation, inability to concentrate, lassitude, dizziness, hypotension, muscular weakness, incoordination, vomiting, diarrhea or constipation, epigastric pain, blurred vision and tinnitus.

Reactive GroupAmines, Phosphines, and Pyridines
Reactivity Profile · 1 item

METHAPYRILENE HYDROCHLORIDE is light sensitive. Solutions of this chemical in water, DMSO, 95% ethanol or acetone should be stable for 24 hours under normal lab conditions. (NTP, 1992). Organosulfides are incompatible with acids, diazo and azo compounds, halocarbons, isocyanates, aldehydes, alkali metals, nitrides, hydrides, and other strong reducing agents. Reactions with these materials generate heat and in many cases hydrogen gas.

Chemistry & industry

Uses & manufacturing

General Manufacturing Information1,2-Ethanediamine, N1,N1-dimethyl-N2-2-pyridinyl-N2-(2-thienylmethyl)-, hydrochloride (1:1): ACTIVE
Applications · 4 items

UsesAntihistaminic;Histamine H1 antagonist

UsesMethapyrilene is used as antihistaminic agent.

General DescriptionMethapyrilene hydrochloride,2-[[2-(dimethylamino)-ethyl]-2-thienylarnino]pyridine monohydrochloride (Histadyl) is available as the bitter-tasting, white crystalline powder that is soluble in water(1:0.5), in alcohol (1:5), and in chloroform (1:3). Its solutionshave a pH of about 5.5. It differs structurally from tripelennaminein having a 2-thiophene—methylene group in placeof the benzyl group. The thiophene ring is considered isostericwith the benzene ring, and the isosteres exhibit similaractivity. A study of the solid-state conformation of methapyrilenehydrochloride showed that the trans-conformation is preferredfor the two ethylenediamine nitrogen atoms. The Foodand Drug Administration declared methapyrilene a potentialcarcinogen in 1979, and all products containing it have beenrecalled.

General DescriptionWhite crystalline powder or solid with a faint odor. Bitter taste. pH (aqueous solution) 5.5.

Upstream & downstream products

Upstream raw materials

Sodium amide2-AminopyridineHydrochloric acid

Suppliers27 total

艾吉析科技(上海)有限公司17717235263 · [email protected]

Related reactions

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Compound notes

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On this pageBasic informationOverviewNames & identifiersPropertiesSafety & regulationChemistry & industryRelated reactionsCompound notes
ChEMBL
CHEMBL1255739
ChEBI
CHEBI:38213
UNII
00S42N58OM
EC Number
205-184-8
InChI
InChI=1S/C14H19N3S.ClH/c1-16(2)9-10-17(12-13-6-5-11-18-13)14-7-3-4-8-15-14;/h3-8,11H,9-10,12H2,1-2H3;1H
InChIKey
BONORRGKLJBGRV-UHFFFAOYSA-N
SMILES
N(CCN(C)C)(CC1SC=CC=1)C1=NC=CC=C1.Cl
FDA 21 CFR
310.545 · 310.545
FDA UNII
0 S42N58OM · 00S42N58OM
EPA Substance Registry System
Methapyrilene hydrochloride (135-23-9)
UNSPSC Code
41116107 · 41116107
NACRES
24 · NA.24
Symbol(GHS)
6 · GHS06
Signal word
Danger
Hazard statements
301 · H301
Precautionary statements
301 · P301+P310
PPE
2 · Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges
Hazard Codes
T
Risk Statements
25 · 25
Safety Statements
22 · 22-36-45
RIDADR
2811 · UN 2811 6.1/PG 3
WGK Germany
3 · 3
RTECS
1750000 · UT1750000
TSCA
TSCA listed
HazardClass
6.1 · 6.1(b)
PackingGroup
III
Storage Class
6.1 C · 6.1C - Combustible acute toxic Cat.3toxic compounds or compounds which causing chronic effects
Hazard Classifications
3 Oral · Acute Tox. 3 Oral
Toxicity
50 oral · LD50 oral in rat: 200mg/kg
Air and Water ReactionsWater soluble.
Hazard Classes and CategoriesAcute Tox. 3 (92.9%)

Safety & protection

Fire FightingFires involving this material can be controlled with a dry chemical, carbon dioxide or Halon extinguisher. (NTP, 1992)
First Aid · 1 item

EYES: First check the victim for contact lenses and remove if present. Flush victim's eyes with water or normal saline solution for 20 to 30 minutes while simultaneously calling a hospital or poison control center. Do not put any ointments, oils, or medication in the victim's eyes without specific instructions from a physician. IMMEDIATELY transport the victim after flushing eyes to a hospital even if no symptoms (such as redness or irritation) develop.

Nonfire Spill Response · 1 item

SMALL SPILLS AND LEAKAGE: If you spill this chemical, you should dampen the solid spill material with water, then transfer the dampened material to a suitable container. Use absorbent paper dampened with water to pick up any remaining material. Seal your contaminated clothing and the absorbent paper in a vapor-tight plastic bag for eventual disposal. Wash all contaminated surfaces with a soap and water solution. Do not reenter the contaminated area until the Safety Officer (or other responsible person) has verified that the area has been properly cleaned.

Isolation and EvacuationExcerpt from ERG Guide 154 [Substances - Toxic and/or Corrosive (Non-Combustible)]:
Personal Protective Equipment (PPE) · 1 item

RECOMMENDED RESPIRATOR: Where the neat test chemical is weighed and diluted, wear a NIOSH-approved half face respirator equipped with a combination filter cartridge, i.e. organic vapor/acid gas/HEPA (specific for organic vapors, HCl, acid gas, SO2 and a high efficiency particulate filter). (NTP, 1992)

Safety data

PPE
Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges
wgk
3
tsca
TSCA listed
rtecs
UT1750000
ridadr
UN 2811 6.1/PG 3
Toxicity
LD50 oral in rat: 200mg/kg
risk_code
25
Signal word
Danger
Symbol(GHS)
GHS06
hazard_code
T
safety_code
22-36-45
hazard_class
6.1(b)
Storage Class
6.1C - Combustible acute toxic Cat.3toxic compounds or compounds which causing chronic effects
packing_group
III
Hazard statements
H301
Hazard Classifications
Acute Tox. 3 Oral
Precautionary statements
P301+P310
安耐吉化学&3A(安徽泽升科技有限公司)021-58432009 400-005-6266 · [email protected]
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HANGZHOU LEAP CHEM CO., LTD.+86-571-87711850 +86-15355479329 · [email protected]
艾吉析科技(上海)有限公司17717235263 17717235263 · [email protected]
上海阿拉丁生化科技股份有限公司6206333 13167063860 · [email protected]
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DAYANG CHEM (HANGZHOU) CO.,LTD+86-88938639 +86-17705817739 · [email protected]
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广州优南科技有限公司020-82000279 18988941452 · [email protected]

Additional notes

DefinitionChEBI: A hydrochloride that is the monohydrochloride salt of methapyrilene.