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化工社化工社 化学情報印刷レポート · 研究参考用
HCID 4890作成日:2026年10月27日

プラゼパム

7-クロロ-1-シクロプロピルメチル-5-(フェニル)-1H-1,4-ベンゾジアゼピン-2(3H)-オン · セントラッキス · セダプラン · プラゼパム · ベルストラン · 1-(シクロプロピルメチル)-5-(フェニル)-7-クロロ-1H-1,4-ベンゾジアゼピン-2(3H)-オン · 1-(シクロプロピルメチル)-5-[フェニル]-7-クロロ-1H-1,4-ベンゾジアゼピン-2(3H)-オン · 7-クロロ-1-(シクロプロピルメチル)-1,3-ジヒドロ-5-フェニル-2H-1,4-ベンゾジアゼピン-2-オン

https://huagongshe.com/ja/chemical/4890

プラゼパム の分子構造式

識別子と物理属性

CAS No.2955-38-6
分子式C19H17ClN2O
平均分子量324.8 g/mol
単同位体質量324.1029409 g/mol
SMILESO=C1CN=C(c2ccccc2)c2cc(Cl)ccc2N1CC1CC1
InChIKeyMWQCHHACWWAQLJ-UHFFFAOYSA-N
PubChem CID4890
ChEMBLCHEMBL969
ChEBICHEBI:8362
EC No.220-975-8
DTXSIDDTXSID4021181
現地名プラゼパム

化学・物理的性質

XLogP3.6
極性表面積32.7
水素結合供与体数0
水素結合受容体数2
回転可能結合数3
重原子数23
形式電荷0
複雑度482
LogP(分配係数)3.73
溶解度3.99e-03 g/L0.25 g をアルコール R に溶解し、同じ溶媒で 10 mL に希釈します。溶液は透明 (2.2.1) で無色 (2.2.2、方法 II) でした。9.095mg/L(25℃)
融点145-146 °C145 - 146 °C145-146°
Physical DescriptionSolid
Kovats Retention Index2648265126242630265226762679269426382610265526412650.12620261926562746.92646.32633.22660.52685
Collision Cross Section174 Ų [M+H]+ [CCS Type: TWMethod: Major Mix IMS/Tof Calibration Kit (Waters)]
沸点538.5±50.0 °C(Predicted)
密度1.1660 (rough estimate)
屈折率1.5790 (estimate)
引火点11 °C
貯蔵条件2-8°C
外観・状態Solid
pKa(酸解離定数)pKa 2.94 (Uncertain)
色White to Off-White
主な用途医薬品(低分子化合物)
InChI1S/C19H17ClN2O/c20-15-8-9-17-16(10-15)19(14-4-2-1-3-5-14)21-11-18(23)22(17)12-13-6-7-13/h1-5,8-10,13H,6-7,11-12H2
InChIKeyMWQCHHACWWAQLJ-UHFFFAOYSA-N
SMILESClc1ccc2N(CC3CC3)C(=O)CN=C(c4ccccc4)c2c1
EPAの化学物質情報2H-1,4-Benzodiazepin-2-one, 7-chloro-1-(cyclopropylmethyl)-1,3-dihydro-5-phenyl- (2955-38-6)

安全性と法規制

GHS 分類This chemical does not meet GHS hazard criteria for 33.3% (1 of 3) of reports.WarningH336 (66.7%): May cause drowsiness or dizziness [Warning Specific target organ toxicity, single exposureNarcotic effects]H361 (66.7%): Suspected of damaging fertility or the unborn child [Warning Reproductive toxicity]H362 (33.3%): May cause harm to breast-fed children [Reproductive toxicity, effects on or via lactation]P203, P260, P261, P263, P264, P270, P271, P280, P304+P340, P318, P319, P403+P233, P405, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 3 reports by companies from 3 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.Reported as not meeting GHS hazard criteria per 1 of 3 reports by companies.There are 2 notifications provided by 2 of 3 reports by companies with hazard statement code(s).Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website.
規制情報DEA schedule IV controlled substance2H-1,4-Benzodiazepin-2-one, 7-chloro-1-(cyclopropylmethyl)-1,3-dihydro-5-phenyl-: Does not have an individual approval but may be used as a component in a product covered by a group standard. It is not approved for use as a chemical in its own right.
その他の安全情報IMAP assessments - 2H-1,4-Benzodiazepin-2-one, 7-chloro-1-(cyclopropylmethyl)-1,3-dihydro-5-phenyl-: Human health tier I assessmentIMAP assessments - 2H-1,4-Benzodiazepin-2-one, 7-chloro-1-(cyclopropylmethyl)-1,3-dihydro-5-phenyl-: Environment tier I assessment
Hazard Classes and CategoriesSTOT SE 3 (66.7%)Repr. 2 (66.7%)Lact. (33.3%)
TreatmentGeneral supportive measures should be employed, along with intravenous fluids, and an adequate airway maintained. Hypotension may be combated by the use of norepinephrine or metaraminol. Dialysis is of limited value. Flumazenil (Anexate) is a competitive benzodiazepine receptor antagonist that can be used as an antidote for benzodiazepine overdose. In particular, flumazenil is very effective at reversing the CNS depression associated with benzodiazepines but is less effective at reversing respiratory depression. Its use, however, is controversial as it has numerous contraindications. It is contraindicated in patients who are on long-term benzodiazepines, those who have ingested a substance that lowers the seizure threshold, or in patients who have tachycardia or a history of seizures. As a general rule, medical observation and supportive care are the mainstay of treatment of benzodiazepine overdose. Although benzodiazepines are absorbed by activated charcoal, gastric decontamination with activated charcoal is not beneficial in pure benzodiazepine overdose as the risk of adverse effects often outweigh any potential benefit from the procedure. It is recommended only if benzodiazepines have been taken in combination with other drugs that may benefit from decontamination. Gastric lavage (stomach pumping) or whole bowel irrigation are also not recommended.

用途

用途

生化学用試薬、神経作用物質。

用途

ベンゾジアゼピン系化合物で す。GABA 受容体に作用し、中枢神経抑制作 用を示します。作用時間は、長時間型とされ ています。

用途

ベンゾジアゼピン系化合物で す。GABA受容体に作用し、中枢神経抑制作 用を示します。作用時間は、長時間型とされ ています。

説明

Prazepam (Item No. 18358) is an analytical reference material categorized as a benzodiazepine. Prazepam is regulated as a Schedule IV compound in the United States. This product is intended for research and forensic applications.

使用

Sedative-hypnotic.

一般的な説明

Prazepam, 7-chloro-1-(cyclopropylmethyl)-1,3-dihydro-5-phenyl-2H-1,4-benzodiazepine-2-one(Verstran), has a long overall half-life. Extensive N-dealkylationoccurs to yield active nordazepam. 3-Hydroxylation ofboth prazepam and nordazepam occurs.

健康影響They cause slurred speech, disorientation and "drunken" behavior. They are physically and psychologically addictive.
暴露経路Oral
毒性の概要Prazepam is believed to stimulate GABA receptors in the ascending reticular activating system. Since GABA is inhibitory, receptor stimulation increases inhibition and blocks both cortical and limbic arousal following stimulation of the brain stem reticular formation.
Signs and SymptomsSymptoms of overdose include somnolence, confusion, coma, and diminished reflexes. Respiration, pulse and blood pressure should be monitored.
Carcinogen ClassificationPrazepamGroup 3: Not classifiable as to its carcinogenicity to humansVolume 66: (1996) Some Pharmaceutical Drugs3, not classifiable as to its carcinogenicity to humans. (L135)
Drug Induced Liver InjuryDrug-Induced Liver Injury Severity and Toxicity (DILIst)PrazepamDILI PositiveDOI:10.1016/j.drudis.2019.09.022
水環境危害等級(WGK)2
RTECS 番号DF2368000
輸送番号(UN)3249
税関コード2933910000
危険文句(R)11-23/24/25-39/23/24/25
危険表示F,T
安全措置(S)22-24/25-45-36/37-16-7
危険等級6.1(b)STOT SE 3
包装等級III
貯蔵分類11 - Combustible Solids