Pirolate

Also known as: CP-32387, ethyl 7,8-dimethoxy-4-oxo-1H-pyrimido[4,5-b]quinoline-2-carboxylate, 1,4-dihydro-7,8-dimethoxy-4-oxopyrimido[4,5-b]quinoline-2-carboxylic acid ethyl ester, Pyrimido[4,5-b]quinoline-2-carboxylic acid, 3,4-dihydro-7,8-dimethoxy-4-oxo-, ethyl ester, ethyl 7,8-dimethoxypyrimido[4,5-b]quinolin-4(3H)-one-2-carboxylate, Pirolato, Pirolatum, NSC 355079, UNII-2LF7L6QD58

Pirolate (CAS 55149-05-8) is a compound in the Esters category listed in the Jingsj chemical database. It has the molecular formula C16H15N3O5 and a molecular weight of 329.30700 g/mol. Key properties include a boiling point of 518.8ºC at 760 mmHg, a density of 1.43g/cm3 and a flash point of 267.5ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 55149-05-8
Jingsj CID: J-1973244-0
Molecular Formula: C₁₆H₁₅N₃O₅
Molecular Weight: 329.30700 g/mol
Category: Esters
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	518.8ºC at 760 mmHg
Density	1.43g/cm3
Flash Point	267.5ºC
Exact Mass	329.10100
PSA	103.40000
LogP	1.66520
Refractive Index	1.641
Storage Conditions	2-8℃

Activity & Biological Data

Target	Histamine H1 receptor[1]
Additional Information	[1]. Arnou, Cristian. METHODS FOR RESTORATION OF HISTAMINE BALANCE. EP2928467A1.

Customs & Trade Information

HS Code	2933990090
Summary	2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of Pirolate?

The CAS number of Pirolate is 55149-05-8.

What are the molecular formula and molecular weight of Pirolate?

Pirolate has molecular formula C16H15N3O5 and molecular weight 329.30700 g/mol.

What are the upstream and downstream products of Pirolate?

For Pirolate, Upstream Products: 2-amino-6,7-dimethoxyquinoline-3-carboxamide, Diethyl oxalate, 6-Nitroveratraldehyde.

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

Last updated: 8/21/2026

How to cite: Jingsj. "Pirolate (CAS 55149-05-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1973244-0 (accessed 2026-11-06).

Data for reference only; verify product details with suppliers before purchase.