5-[(2S)-2-pyrrolidinyl]-1H-tetrazole

(S)-5-(吡咯烷-2-基)-1H-四唑

Also known as: (S)-(-)-5-(2-Pyrrolidinyl)-1H-tetrazole, (S)-(-)-2-Tetrazol-5-ylpyrrolidine, Proline Tetrazole Catalyst, (S)-2-(1H-Tetrazol-5-yl)pyrrolidine, 5-[(2S)-pyrrolidin-2-yl]-2H-tetrazole

5-[(2S)-2-pyrrolidinyl]-1H-tetrazole (CAS 33878-70-5) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C5H9N5 and a molecular weight of 139.158 g/mol. It is also known as (S)-(-)-5-(2-Pyrrolidinyl)-1H-tetrazole, (S)-(-)-2-Tetrazol-5-ylpyrrolidine and Proline Tetrazole Catalyst. Key properties include a melting point of 271ºC, a boiling point of 335.4±52.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 156.6±30.7 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 33878-70-5
Jingsj CID: J-1016347-2
Molecular Formula: C₅H₉N₅
Chinese Name: (S)-5-(吡咯烷-2-基)-1H-四唑
Molecular Weight: 139.158 g/mol
Category: Aliphatic Hydrocarbons
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	271ºC
Boiling Point	335.4±52.0 °C at 760 mmHg
Density	1.3±0.1 g/cm3
Flash Point	156.6±30.7 °C

Frequently Asked Questions

What is the CAS number of 5-[(2S)-2-pyrrolidinyl]-1H-tetrazole?

The CAS number of 5-[(2S)-2-pyrrolidinyl]-1H-tetrazole is 33878-70-5.

What are the molecular formula and molecular weight of 5-[(2S)-2-pyrrolidinyl]-1H-tetrazole?

5-[(2S)-2-pyrrolidinyl]-1H-tetrazole has molecular formula C5H9N5 and molecular weight 139.158 g/mol.

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

Last updated: 8/21/2026

How to cite: Jingsj. "5-[(2S)-2-pyrrolidinyl]-1H-tetrazole (CAS 33878-70-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1016347-2 (accessed 2026-10-22).

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