Boc-L-Pyroglutamic acid methyl ester
Also known as: Methyl (2S)-1-(tert-butoxycarbonyl)-5-oxopyrrolidine-2-carboxylate, Boc-Pyr-OMe, Methyl Boc-L-Pyroglutamate, (S)-N-Boc-5-methoxycarbonyl-2-pyrrolidinone, 1-tert-Butyl 2-methyl (2S)-5-oxopyrrolidine-1,2-dicarboxylate
Boc-L-Pyroglutamic acid methyl ester (CAS 108963-96-8) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C11H17NO5 and a molecular weight of 243.256 g/mol. Key properties include a melting point of 69-71ºC, a boiling point of 361.6±35.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 172.5±25.9 °C. It is classified under GHS with signal word Warning and hazard statements H317 — May cause an allergic skin reaction and H319 — Causes serious eye irritation. It is listed by 1 supplier; request a quote for pricing. Record last updated Aug 21, 2026.
- CAS No.
- 108963-96-8
- Jingsj CID
- J-1099003-1
- Molecular Formula
- C11H17NO5
- Molecular Weight
- 243.256 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
| Supplier | Purity / Pack | Base Price | Unit Price | Origin | |
|---|---|---|---|---|---|
Made to Order | - | - | CN China |
Physicochemical Properties
| Melting Point | 69-71ºC |
|---|---|
| Boiling Point | 361.6±35.0 °C at 760 mmHg |
| Density | 1.2±0.1 g/cm3 |
| Flash Point | 172.5±25.9 °C |
| Exact Mass | 243.110672 |
| PSA | 72.91000 |
| LogP | -0.44 |
| Vapor Pressure | 0.0±0.8 mmHg at 25°C |
| Refractive Index | 1.488 |
| Storage Conditions | 2-8°C |
GHS Safety & Compliance
- H317 — May cause an allergic skin reaction
- H319 — Causes serious eye irritation
Customs & Trade Information
| HS Code | 2933790090 |
|---|---|
| Summary | 2933790090. other lactams. VAT:17.0%. Tax rebate rate:9.0%. . MFN tariff:9.0%. General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of Boc-L-Pyroglutamic acid methyl ester?
The CAS number of Boc-L-Pyroglutamic acid methyl ester is 108963-96-8.
What are the molecular formula and molecular weight of Boc-L-Pyroglutamic acid methyl ester?
Boc-L-Pyroglutamic acid methyl ester has molecular formula C11H17NO5 and molecular weight 243.256 g/mol.
Which suppliers offer Boc-L-Pyroglutamic acid methyl ester?
1 supplier(s) listed; request a quote for pricing.
Is Boc-L-Pyroglutamic acid methyl ester hazardous?
Boc-L-Pyroglutamic acid methyl ester has GHS signal word Warning and hazard statements H317 — May cause an allergic skin reaction; H319 — Causes serious eye irritation.
What are the upstream and downstream products of Boc-L-Pyroglutamic acid methyl ester?
For Boc-L-Pyroglutamic acid methyl ester, Upstream Products: Di-tert-butyl dicarbonate, Methyl L-pyroglutamate, Methanol; Downstream Products: (2S,5S)-1-(tert-butoxycarbonyl)-5-methylpyrrolidine-2-carboxylic acid, (2S,4R)-1-(tert-Butoxycarbonyl)-4-methylpyrrolidine-2-carboxylic acid, N-tert-Butoxycarbonyl-L-proline methyl ester.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Boc-L-Pyroglutamic acid methyl ester (CAS 108963-96-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1099003-1 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.