Pemirolast potassium
吡嘧司特钾
Also known as: Pemirolast potassium hydrate, 9-Methyl-3-(1H-tetrazol-5-yl)-4H-pyrido[1,2-a]pyrimidin-4-one potassium salt, 9-Methyl-3-(1H-tetrazol-5-yl)-4H-pyrido[1,2-a]pyrimidin-4-one Potassium Salt Hydrate, Potassium 5-(9-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl)tetrazol-1-ide, 10-methyl-4-(2H-tetrazol-5-yl)-2,6-diazabicyclo[4.4.0]deca-1,3,7,9-tetraen-5-one potassium, BMY-26517, BMY 26517, TWT-8152, TWT 8152, DE-068, Alegysal, Alamast, Pemirolast (potassium), bmy26517, tbx
Pemirolast potassium (CAS 100299-08-9) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C10H7KN6O and a molecular weight of 266.301 g/mol. It is also known as Pemirolast potassium hydrate, 9-Methyl-3-(1H-tetrazol-5-yl)-4H-pyrido[1,2-a]pyrimidin-4-one potassium salt and 9-Methyl-3-(1H-tetrazol-5-yl)-4H-pyrido[1,2-a]pyrimidin-4-one Potassium Salt Hydrate. Key properties include a melting point of 310-311ºC (dec.), a boiling point of 454.8ºC at 760mmHg and a flash point of 228.9ºC. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 100299-08-9
- Jingsj CID
- J-1984159-7
- Molecular Formula
- C10H7KN6O
- Chinese Name
- 吡嘧司特钾
- Molecular Weight
- 266.301 g/mol
- Category
- Organic Compounds
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 310-311ºC (dec.) |
|---|---|
| Boiling Point | 454.8ºC at 760mmHg |
| Flash Point | 228.9ºC |
| Exact Mass | 266.031830 |
| PSA | 77.97000 |
| Vapor Pressure | 1.85E-08mmHg at 25°C |
| Storage Conditions | -20°C Freezer, Under Inert Atmosphere |
GHS Safety & Compliance
- H302 — Harmful if swallowed
Activity & Biological Data
| Additional Information | [1]. Kemp, J.P., et al., Pemirolast, a new oral nonbronchodilator drug for chronic asthma. Ann Allergy, 1992. 68(6): p. 488-91. [2]. Tatsushima, Y., et al., Pemirolast reduces cisplatin-induced kaolin intake in rats. Eur J Pharmacol, 2011. 661(1-3): p. 57-62. [3]. Itoh, Y., et al., Pemirolast potently attenuates paclitaxel hypersensitivity reactions through inhibition of the release of sensory neuropeptides in rats. Neuropharmacology, 2004. 46(6): p. 888-94. [4]. Abelson, M.B., et al., Pemirolast potassium 0.1% ophthalmic solution is an effective treatment for allergic conjunctivitis: a pooled analysis of two prospective, randomized, double-masked, placebo-controlled, phase III studies. J Ocul Pharmacol Ther, 2002. 18(5): p. 475-88. |
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Frequently Asked Questions
What is the CAS number of Pemirolast potassium?
The CAS number of Pemirolast potassium is 100299-08-9.
What are the molecular formula and molecular weight of Pemirolast potassium?
Pemirolast potassium has molecular formula C10H7KN6O and molecular weight 266.301 g/mol.
Is Pemirolast potassium hazardous?
Pemirolast potassium has GHS signal word Warning and hazard statements H302 — Harmful if swallowed.
What are the upstream and downstream products of Pemirolast potassium?
For Pemirolast potassium, Upstream Products: Pemirolast, 2-Amino-3-methylpyridine.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Pemirolast potassium (CAS 100299-08-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1984159-7 (accessed 2026-10-28).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.