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9-methyl-3-(2H-tetrazol-5-yl)pyrido[1,2-a]pyrimidin-4-one

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Origin: China

Cas No: 69372-19-6

Specification: 99%min

Min order Quantity: 1 /kg

Supply Ability: 100 mt/month

Lead time: 7 days for OEM, 3 days for ready goods

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Products Specification
Product Description

Property

CAS No.: 69372-19-6 Formula: C10H8N6O Molecular Weight: 228.21000

Basic Info

Chemical Name	9-methyl-3-(2H-tetrazol-5-yl)pyrido[1,2-a]pyrimidin-4-one
Synonyms	3-(1H-tetrazol-5-yl)-9-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidine; Pemirolast (INN); UNII-2C09NV773M; Pemirox (TN); Pemirolastum [INN-Latin]; Pemiroplast Potassium; Pemirolastum; Pemirolast; 9-methyl-3-(1H-tetrazol-5-yl)-4H-pyrido[1,2-a]pyrimidin-4-one; 9-TBX;
CAS No.	69372-19-6
Molecular Formula	C10H8N6O
Molecular Weight	228.21000
PSA	88.83000
LogP	0.18300

Properties

Density	1.64 g/cm3
Boiling Point	454.8ºC at 760 mmHg
Melting Point	310-311ºC (decomposes)
Flash Point	228.9ºC

Safety Info

Hazard Class	8
Safety Statements	S16; S26; S36/37/39; S37/39
Packing Group	II
WGK Germany	3
RIDADR	UN 3265 8/PG 2
Risk Statements	R34
Hazard Codes	C

Synthesis Route

3-cyano-4-imino-9-methyl-4H-pyrido[1,2-a]pyrimidine→9-methyl-3-(2H-tetrazol-5-yl)pyrido[1,2-a]pyrimidin-4-one
4-imino-9-methyl-3-(1H-tetrazol-5-yl)-4H-pyrido(1,2-a)pyrimidine→9-methyl-3-(2H-tetrazol-5-yl)pyrido[1,2-a]pyrimidin-4-one
2-Amino-3-picoline+Triethyl orthoformate→9-methyl-3-(2H-tetrazol-5-yl)pyrido[1,2-a]pyrimidin-4-one

Precursor

4-imino-9-methyl-3-(1H-tetrazol-5-yl)-4H-pyrido(1,2-a)pyrimidine
malononitrile
3-cyano-4-imino-9-methyl-4H-pyrido[1,2-a]pyrimidine
2-Amino-3-picoline

Downstream Product

Pemirolast Potassium Hydrate

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