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5,10-Dihydro-2-methyl-4H-thieno[2,3-b][1,5]benzodiazepin-4-one

奥氮平相关物质B

Also known as: Olanzapine impurity B, Olanzapine related compound B, LY 301664, LY-301664, 2-methyl-5,10-dihydro-4H-thieno[2,3-b][1,5]benzodiazepin-4-one, Olanzapine EP Impurity B, Olanzapine lactam, THI071, UNII-154GKG25DA

5,10-Dihydro-2-methyl-4H-thieno[2,3-b][1,5]benzodiazepin-4-one (CAS 221176-49-4) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C12H10N2OS and a molecular weight of 230.28600 g/mol. It is also known as Olanzapine impurity B, Olanzapine related compound B and LY 301664. Key properties include a melting point of 235-237ºC, a boiling point of 341.1ºC at 760 mmHg, a density of 1.292g/cm3 and a flash point of 160.1ºC. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
221176-49-4
Jingsj CID
J-1503271-9
Molecular Formula
C12H10N2OS
Chinese Name
奥氮平相关物质B
Molecular Weight
230.28600 g/mol
Category
Organic Compounds
Last updated
8/21/2026

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Physicochemical Properties

Melting Point235-237ºC
Boiling Point341.1ºC at 760 mmHg
Density1.292g/cm3
Flash Point160.1ºC

GHS Safety & Compliance

IrritantSignal word: Warning

Frequently Asked Questions

What is the CAS number of 5,10-Dihydro-2-methyl-4H-thieno[2,3-b][1,5]benzodiazepin-4-one?

The CAS number of 5,10-Dihydro-2-methyl-4H-thieno[2,3-b][1,5]benzodiazepin-4-one is 221176-49-4.

What are the molecular formula and molecular weight of 5,10-Dihydro-2-methyl-4H-thieno[2,3-b][1,5]benzodiazepin-4-one?

5,10-Dihydro-2-methyl-4H-thieno[2,3-b][1,5]benzodiazepin-4-one has molecular formula C12H10N2OS and molecular weight 230.28600 g/mol.

Is 5,10-Dihydro-2-methyl-4H-thieno[2,3-b][1,5]benzodiazepin-4-one hazardous?

5,10-Dihydro-2-methyl-4H-thieno[2,3-b][1,5]benzodiazepin-4-one has GHS signal word Warning.

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

Last updated:

How to cite: Jingsj. "5,10-Dihydro-2-methyl-4H-thieno[2,3-b][1,5]benzodiazepin-4-one (CAS 221176-49-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1503271-9 (accessed 2026-10-23).

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