2-Methyl-4-(1-piperazinyl)-10H-thieno[2,3-b][1,5]benzodiazepine

2-甲基-4-(1-哌嗪基)-10H-噻吩并[2,3-b][1,5]苯并二氮杂卓

Also known as: N-Desmethylolanzapine, Desmethylolanzapine, LY 170055, 4'-Desmethylolanzapine, Olanzapine EP Impurity G, 2-Methyl-4-piperazin-1-yl-10H-thieno[2,3-b][1,5]benzodiazepine

2-Methyl-4-(1-piperazinyl)-10H-thieno[2,3-b][1,5]benzodiazepine (CAS 161696-76-0) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C16H18N4S and a molecular weight of 298.41 g/mol. It is also known as N-Desmethylolanzapine, Desmethylolanzapine and LY 170055. Key properties include a melting point of 144.5ºC, a boiling point of 489.2ºC at 760 mmHg, a density of 1.38g/cm3 and a flash point of 249.7ºC. GHS signal word: Danger. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 161696-76-0
Jingsj CID: J-1976454-6
Molecular Formula: C₁₆H₁₈N₄S
Chinese Name: 2-甲基-4-(1-哌嗪基)-10H-噻吩并[2,3-b][1,5]苯并二氮杂卓
Molecular Weight: 298.41 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	144.5ºC
Boiling Point	489.2ºC at 760 mmHg
Density	1.38g/cm3
Flash Point	249.7ºC

GHS Safety & Compliance

Flammable / IrritantSignal word: Danger

Frequently Asked Questions

What is the CAS number of 2-Methyl-4-(1-piperazinyl)-10H-thieno[2,3-b][1,5]benzodiazepine?

The CAS number of 2-Methyl-4-(1-piperazinyl)-10H-thieno[2,3-b][1,5]benzodiazepine is 161696-76-0.

What are the molecular formula and molecular weight of 2-Methyl-4-(1-piperazinyl)-10H-thieno[2,3-b][1,5]benzodiazepine?

2-Methyl-4-(1-piperazinyl)-10H-thieno[2,3-b][1,5]benzodiazepine has molecular formula C16H18N4S and molecular weight 298.41 g/mol.

Is 2-Methyl-4-(1-piperazinyl)-10H-thieno[2,3-b][1,5]benzodiazepine hazardous?

2-Methyl-4-(1-piperazinyl)-10H-thieno[2,3-b][1,5]benzodiazepine has GHS signal word Danger.

Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "2-Methyl-4-(1-piperazinyl)-10H-thieno[2,3-b][1,5]benzodiazepine (CAS 161696-76-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1976454-6 (accessed 2026-10-26).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.