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ChemicalBook >> CAS DataBase List >> 3-(2-chloroethyl)-9-hydroxy-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one hydrochloride

3-(2-chloroethyl)-9-hydroxy-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one hydrochloride

3-(2-chloroethyl)-9-hydroxy-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one hydrochloride price.
  • $215 - $3651
  • Product name: 3-(2-chloroethyl)-9-hydroxy-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one hydrochloride
  • CAS: 849727-62-4
  • MF: C11H12Cl2N2O2
  • MW: 275.13118
  • EINECS:617-648-0
  • MDL Number:MFCD18207009
  • Synonyms:3-(2-chloroethyl)-9-hydroxy-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one hydrochloride;Paliperidone Tetradehydro Chloroethyl Impurity;3-(2-Chloroethyl)-9-Hydroxy-2-Methyl-4H-Pyrido[1,2-a] Pyrimidin-4-One HCl;3-(2-chloroethyl)-9-hydroxy-2-methyl-4H-pyrido[1,2-a]pyrimidine-4-one;3-(2-Chloroethyl)-9-Hydroxy-2-Methyl-4H-Pyrido[1,2-a] Pyrimidin-4-One HCI;3-(2-chloroethyl)-9-hydroxy-2-methylpyrido[1,2-a]pyrimidin-4-one,hydrochloride;Paliperidone Impurity 11 Hydrochloride;Paliperidone Impurity 1 HCl
10 prices
Selected condition：
Brand
  • aablocks
  • Chemenu
  • Medical Isotopes, Inc.
  • TRC
  • Usbiological
Package
  • 25mg
  • 250mg
  • Manufactureraablocks
  • Product numberAA00GLS1
  • Product description3-(2-Chloroethyl)-9-hydroxy-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one hydrochloride
  • Packaging25mg
  • Price$360
  • Updated2026-05-28
  • Buy
  • Manufactureraablocks
  • Product numberAA00GLS1
  • Product description3-(2-Chloroethyl)-9-hydroxy-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one hydrochloride
  • Packaging250mg
  • Price$1956
  • Updated2026-05-28
  • Buy
  • ManufacturerChemenu
  • Product numberCM337887
  • Product description3-(2-Chloroethyl)-9-hydroxy-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one (hydrochloride) 95%+
  • Packaging250mg
  • Price$3651
  • Updated2026-05-20
  • Buy
  • ManufacturerChemenu
  • Product numberCM337887
  • Product description3-(2-Chloroethyl)-9-hydroxy-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one (hydrochloride) 95%+
  • Packaging250mg
  • Price$3651
  • Updated2026-05-26
  • Buy
  • ManufacturerMedical Isotopes, Inc.
  • Product number68592
  • Product description3-(2-Chloroethyl)-9-hydroxy-2-methyl-4H-Pyrido[1,2-α]pyrimidin-4-oneHCl
  • Packaging25mg
  • Price$675
  • Updated2021-12-16
  • Buy
  • ManufacturerMedical Isotopes, Inc.
  • Product number68592
  • Product description3-(2-Chloroethyl)-9-hydroxy-2-methyl-4H-Pyrido[1,2-α]pyrimidin-4-oneHCl
  • Packaging250mg
  • Price$2400
  • Updated2021-12-16
  • Buy
  • ManufacturerTRC
  • Product numberTRC-C364240-250MG
  • Product description3-(2-Chloroethyl)-9-hydroxy-2-methyl-4H-Pyrido[1,2-a]pyrimidin-4-one Hydrochloride
  • Packaging250mg
  • Price$2295
  • Updated2026-06-03
  • Buy
  • ManufacturerTRC
  • Product numberC364240
  • Product description3-(2-Chloroethyl)-9-hydroxy-2-methyl-4H-Pyrido[1,2-a]pyrimidin-4-oneHydrochloride
  • Packaging25mg
  • Price$215
  • Updated2021-12-16
  • Buy
  • ManufacturerTRC
  • Product numberTRC-C364240-25MG
  • Product description3-(2-Chloroethyl)-9-hydroxy-2-methyl-4H-Pyrido[1,2-a]pyrimidin-4-one Hydrochloride
  • Packaging25mg
  • Price$299
  • Updated2026-06-03
  • Buy
  • ManufacturerUsbiological
  • Product number422427
  • Product description3-(2-Chloroethyl)-9-hydroxy-2-methyl-4H-Pyrido[1,2-a]pyrimidin-4-one Hydrochloride
  • Packaging25mg
  • Price$552
  • Updated2026-06-03
  • Buy
Manufacturer Product number Product description Packaging Price Updated Buy
aablocks AA00GLS1 3-(2-Chloroethyl)-9-hydroxy-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one hydrochloride 25mg $360 2026-05-28 Buy
aablocks AA00GLS1 3-(2-Chloroethyl)-9-hydroxy-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one hydrochloride 250mg $1956 2026-05-28 Buy
Chemenu CM337887 3-(2-Chloroethyl)-9-hydroxy-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one (hydrochloride) 95%+ 250mg $3651 2026-05-20 Buy
Chemenu CM337887 3-(2-Chloroethyl)-9-hydroxy-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one (hydrochloride) 95%+ 250mg $3651 2026-05-26 Buy
Medical Isotopes, Inc. 68592 3-(2-Chloroethyl)-9-hydroxy-2-methyl-4H-Pyrido[1,2-α]pyrimidin-4-oneHCl 25mg $675 2021-12-16 Buy
Medical Isotopes, Inc. 68592 3-(2-Chloroethyl)-9-hydroxy-2-methyl-4H-Pyrido[1,2-α]pyrimidin-4-oneHCl 250mg $2400 2021-12-16 Buy
TRC TRC-C364240-250MG 3-(2-Chloroethyl)-9-hydroxy-2-methyl-4H-Pyrido[1,2-a]pyrimidin-4-one Hydrochloride 250mg $2295 2026-06-03 Buy
TRC C364240 3-(2-Chloroethyl)-9-hydroxy-2-methyl-4H-Pyrido[1,2-a]pyrimidin-4-oneHydrochloride 25mg $215 2021-12-16 Buy
TRC TRC-C364240-25MG 3-(2-Chloroethyl)-9-hydroxy-2-methyl-4H-Pyrido[1,2-a]pyrimidin-4-one Hydrochloride 25mg $299 2026-06-03 Buy
Usbiological 422427 3-(2-Chloroethyl)-9-hydroxy-2-methyl-4H-Pyrido[1,2-a]pyrimidin-4-one Hydrochloride 25mg $552 2026-06-03 Buy

Properties

Melting point :>218°C (dec.)
Density :1.6g/cm3 at 20℃
vapor pressure :0-0Pa at 20-25℃
storage temp. :Refrigerator
solubility :DMSO (Slightly), Methanol (Slightly)
form :Solid
color :Yellow to Dark Yellow
InChI :InChI=1S/C11H11ClN2O2.ClH/c1-7-8(4-5-12)11(16)14-6-2-3-9(15)10(14)13-7;/h2-3,6,15H,4-5H2,1H3;1H
InChIKey :SGFCSZRUSXKSHM-UHFFFAOYSA-N
SMILES :C12C(O)=CC=CN1C(=O)C(CCCl)=C(C)N=2.[H]Cl
LogP :1.9 at 20℃ and pH7

Safety Information

Symbol(GHS): Health Hazard (GHS08)Exclamation Mark (GHS07)Environment (GHS09)Corrosion (GHS05)
Signal word: Danger
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H302 Harmful if swallowed Acute toxicity,oral Category 4 Warning P264, P270, P301+P312, P330, P501
H314 Causes severe skin burns and eye damage Skin corrosion/irritation Category 1A, B, C Danger P260,P264, P280, P301+P330+ P331,P303+P361+P353, P363, P304+P340,P310, P321, P305+ P351+P338, P405,P501
H341 Suspected of causing genetic defects Germ cell mutagenicity Category 2 Warning P201,P202, P281, P308+P313, P405,P501
H411 Toxic to aquatic life with long lasting effects Hazardous to the aquatic environment, long-term hazard Category 2
Precautionary statements:
P201 Obtain special instructions before use.
P202 Do not handle until all safety precautions have been read and understood.
P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P264 Wash hands thoroughly after handling.
P264 Wash skin thouroughly after handling.
P270 Do not eat, drink or smoke when using this product.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P281 Use personal protective equipment as required.
P301+P312 IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.
P301+P330+P331 IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.
P303+P361+P353 IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.
P304+P340 IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P308+P313 IF exposed or concerned: Get medical advice/attention.
P310 Immediately call a POISON CENTER or doctor/physician.
P321 Specific treatment (see … on this label).
P330 Rinse mouth.
P363 Wash contaminated clothing before reuse.
P405 Store locked up.
P501 Dispose of contents/container to..…

Description

3-(2-Chloroethyl)-9-hydroxy-2-methyl-4H-Pyrido[1,2-a]pyrimidin-4-one Hydrochloride is an intermediate in the synthesis of analog of Paliperidone (P141000), a combined serotonin and dopamine receptor antagonist.
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