Repirinast

瑞吡司特

Also known as: 5,6-Dihydro-7,8-dimethyl-4,5-dioxo-4H-pyrano[3,2-c]quinoline-2-carboxylic acid 3-methylbutyl ester, Isopentyl 5,6-dihydro-7,8-dimethyl-4,5-dioxo-4H-pyrano[3,2-c]quinoline-2-carboxylate, 3-Methylbutyl 7,8-dimethyl-4,5-dioxo-6H-pyrano[5,6-c]quinoline-2-carboxylate, MY-5116, Romet

Repirinast (CAS 73080-51-0) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C8H11N7O and a molecular weight of 221.219 g/mol. It is also known as 5,6-Dihydro-7,8-dimethyl-4,5-dioxo-4H-pyrano[3,2-c]quinoline-2-carboxylic acid 3-methylbutyl ester, Isopentyl 5,6-dihydro-7,8-dimethyl-4,5-dioxo-4H-pyrano[3,2-c]quinoline-2-carboxylate and 3-Methylbutyl 7,8-dimethyl-4,5-dioxo-6H-pyrano[5,6-c]quinoline-2-carboxylate. Key properties include a melting point of 236-241°, a boiling point of 461.1±55.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 232.6±31.5 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 73080-51-0
Jingsj CID: J-49177-8
Molecular Formula: C₈H₁₁N₇O
Chinese Name: 瑞吡司特
Molecular Weight: 221.219 g/mol
Category: Organic Compounds
Last updated: 8/21/2026

No offers for this compound yet.

Request a quote

Physicochemical Properties

Melting Point	236-241°
Boiling Point	461.1±55.0 °C at 760 mmHg
Density	1.6±0.1 g/cm3
Flash Point	232.6±31.5 °C
Exact Mass	221.102509
PSA	89.37000
LogP	0.46
Vapor Pressure	0.0±1.1 mmHg at 25°C
Refractive Index	1.731

Activity & Biological Data

Additional Information	[1]. N Yamada, et al. Repirinast inhibits antigen-induced early and late pulmonary responses and airway hyperresponsiveness in guinea pigs. Int Arch Allergy Immunol. 1993;100(4):367-72. [2]. Takahashi K. Effects of MY-5116 on experimental asthma in rats and guinea pigs. Arerugi. 1986 Oct; 35(10): 1037-46. [3]. M Takei, et al. Inhibition of histamine release from rat peritoneal mast cells by MY-1250, an active metabolite of Repirinast (MY-5116). Int Arch Allergy Appl Immunol. 1990;93(2-3):237-41.

Additional Information

[1]. N Yamada, et al. Repirinast inhibits antigen-induced early and late pulmonary responses and airway hyperresponsiveness in guinea pigs. Int Arch Allergy Immunol. 1993;100(4):367-72. [2]. Takahashi K. Effects of MY-5116 on experimental asthma in rats and guinea pigs. Arerugi. 1986 Oct; 35(10): 1037-46. [3]. M Takei, et al. Inhibition of histamine release from rat peritoneal mast cells by MY-1250, an active metabolite of Repirinast (MY-5116). Int Arch Allergy Appl Immunol. 1990;93(2-3):237-41.

Customs & Trade Information

HS Code	2934999090
Summary	2934999090. other heterocyclic compounds. 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 Repirinast?

The CAS number of Repirinast is 73080-51-0.

What are the molecular formula and molecular weight of Repirinast?

Repirinast has molecular formula C8H11N7O and molecular weight 221.219 g/mol.

What are the upstream and downstream products of Repirinast?

For Repirinast, Upstream Products: 2,3-Dimethylaniline, 5,6-Dihydro-7,8-dimethyl-4,5-dioxo-4H-pyrano[3,2-c]quinoline-2-carboxylic acid, 3-Methyl-1-butanol.

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

Last updated: 8/21/2026

How to cite: Jingsj. "Repirinast (CAS 73080-51-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-49177-8 (accessed 2026-10-28).

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