3-Ethyl-2-Methyl-4H-Pyrido[1,2-A]Pyrimidine-4-One

3-Ethyl-2-Methyl-4H-Pyrido[1,2-A]Pyrimidine-4-One
Catalog No. KMR004005
CAS No. 16867-31-5
Formula C11H12N2O
FW 188.2
Unit Price Stock
100 mg Enquire Enquire
Chemical Name 3-ethyl-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one
Purity >95%
Storage Store at 2-8 deg. C for long term storage
Shipping Product is stable to be Shipped at Room Temperature
Download MSDS

Related Products

N-Nitroso Risperidone Impurity 1

N-Nitroso Risperidone Impurity 1

CAS No. : Not Available

CAT No. : KMR004001

Formula : C12H12FN3O2

FW : 249.24

View Details
Risperidone Impurity 4

Risperidone Impurity 4

CAS No. : 41078-70-0

CAT No. : KMR004002

Formula : C11H11ClN2O

FW : 222.67

View Details
Bicyclo Risperidone

Bicyclo Risperidone

CAS No. : 2231638-02-9

CAT No. : KMR004009

Formula : C23H28FN4O2 : I

FW : 411.5 : 126.9

View Details
Risperidone

Risperidone

CAS No. : 106266-06-2

CAT No. : KMR004013

Formula : C23H27FN4O2

FW : 410.5

View Details
Risperidone 6-Methyl Chloroethyl Impurity

Risperidone 6-Methyl Chloroethyl Impurity

CAS No. : 2760668-87-7

CAT No. : KMR004016

Formula : C12H17ClN2O

FW : 240.7

View Details
Risperidone cis-N-Oxide

Risperidone cis-N-Oxide

CAS No. : 1894509-66-0

CAT No. : KMR004018

Formula : C23H27FN4O3

FW : 426.5

View Details
Risperidone Difluoro Acetyl Impurity

Risperidone Difluoro Acetyl Impurity

CAS No. : 84162-82-3

CAT No. : KMR004022

Formula :  C14H15F2NO2

FW : 267.3

View Details
Risperidone Difluorobenzoyl Impurity

Risperidone Difluorobenzoyl Impurity

CAS No. : 106266-04-0

CAT No. : KMR004023

Formula : C12H13F2NO : HCl

FW : 225.2 : 36.5

View Details
Risperidone E/Z-Oxime

Risperidone E/Z-Oxime

CAS No. : 158697-66-6

CAT No. : KMR004024

Formula : C23H28F2N4O2

FW : 430.5

View Details
Risperidone EP Impurity A

Risperidone EP Impurity A

CAS No. : 691007-09-7

CAT No. : KMR004025

Formula : C23H28F2N4O2

FW : 430.5

View Details
Risperidone EP Impurity B

Risperidone EP Impurity B

CAS No. : 132961-05-8

CAT No. : KMR004026

Formula : C23H28F2N4O2

FW : 430.5

View Details
Risperidone EP Impurity C

Risperidone EP Impurity C

CAS No. : 144598-75-4

CAT No. : KMR004027

Formula : C23H27FN4O3

FW : 426.5

View Details
Risperidone EP Impurity D

Risperidone EP Impurity D

CAS No. : 1199589-74-6

CAT No. : KMR004028

Formula : C23H27FN4O2

FW : 410.5

View Details
Risperidone EP Impurity E

Risperidone EP Impurity E

CAS No. : 1346602-28-5

CAT No. : KMR004029

Formula : C24H29FN4O2

FW : 424.5

View Details
Risperidone EP Impurity F

Risperidone EP Impurity F

CAS No. : 1346603-86-8

CAT No. : KMR004030

Formula : C24H27FN4O4

FW : 454.5

View Details
Risperidone EP Impurity H

Risperidone EP Impurity H

CAS No. : 158697-67-7

CAT No. : KMR004031

Formula : C23H27F2N3O2

FW : 415.5

View Details
Risperidone EP Impurity K

Risperidone EP Impurity K

CAS No. : 106266-09-5

CAT No. : KMR004034

Formula : C23H28N4O2

FW : 392.5

View Details
Risperidone EP Impurity L

Risperidone EP Impurity L

CAS No. : 63234-80-0

CAT No. : KMR004035

Formula : C11H15ClN2O

FW : 226.7

View Details
Risperidone EP Impurity M

Risperidone EP Impurity M

CAS No. : 84163-13-3

CAT No. : KMR004036

Formula : C12H13FN2O : HCl

FW : 220.2 : 36.5

View Details
Risperidone Ethyl Impurity

Risperidone Ethyl Impurity

CAS No. : 70381-58-7

CAT No. : KMR004037

Formula : C11H16N2O

FW : 192.23

View Details
Risperidone Hydroxyethyl Impurity

Risperidone Hydroxyethyl Impurity

CAS No. : 66698-27-9

CAT No. : KMR004038

Formula : C11H16N2O2

FW : 208.3

View Details
Risperidone N-Oxide

Risperidone N-Oxide

CAS No. : 832747-55-4

CAT No. : KMR004046

Formula : C23H27FN4O3

FW : 426.5

View Details
Risperidone Quaternary Salt

Risperidone Quaternary Salt

CAS No. : NA

CAT No. : KMR004048

Formula : C34H42FN6O3

FW : 601.8

View Details
Risperidone Trans N-Oxide

Risperidone Trans N-Oxide

CAS No. : 1200448-51-6

CAT No. : KMR004050

Formula : C23H27FN4O3

FW : 426.5

View Details
Risperidone USP Related Compound G

Risperidone USP Related Compound G

CAS No. : 152542-00-2

CAT No. : KMR004051

Formula : C23H28FN3O3

FW : 413.5

View Details
4-Fluoro Risperidone

4-Fluoro Risperidone

CAS No. : NA

CAT No. : KMR004006

Formula : C23H27FN4O2

FW : 410.5

View Details
7-Hydroxy Risperidone

7-Hydroxy Risperidone

CAS No. : 147663-04-5

CAT No. : KMR004007

Formula : C23H27FN4O3

FW : 426.5

View Details
Risperidone 4-Hydroxybenzoyl Impurity

Risperidone 4-Hydroxybenzoyl Impurity

CAS No. : 1391053-32-9

CAT No. : KMR004014

Formula : C23H28FN3O3

FW : 413.5

View Details
Risperidone 5,6,7,8-Tetradehydro Impurity

Risperidone 5,6,7,8-Tetradehydro Impurity

CAS No. : 108855-18-1

CAT No. : KMR004015

Formula : C23H23FN4O2

FW : 406.5

View Details
Risperidone Acetylpiperidine Impurity

Risperidone Acetylpiperidine Impurity

CAS No. : NA

CAT No. : KMR004017

Formula : C26H27F2N3O3

FW : 467.5

View Details
Risperidone Degradation product

Risperidone Degradation product

CAS No. : 832747-59-8

CAT No. : KMR004021

Formula : C11H14N2O

FW : 190.3

View Details
Risperidone EP Impurity I

Risperidone EP Impurity I

CAS No. : 1329796-66-8

CAT No. : KMR004032

Formula : C36H39F2N5O3

FW : 615.7

View Details
Risperidone EP Impurity J

Risperidone EP Impurity J

CAS No. : 1346606-24-3

CAT No. : KMR004033

Formula : C35H40F2N6O3

FW : 630.7

View Details
Risperidone Impurity 1

Risperidone Impurity 1

CAS No. : 95742-20-4

CAT No. : KMR004039

Formula : C12H13FN2O

FW : 220.2

View Details
Risperidone Impurity 2

Risperidone Impurity 2

CAS No. : NA

CAT No. : KMR004040

Formula : C12H13FN2O2

FW : 236.2

View Details
Risperidone Impurity 3

Risperidone Impurity 3

CAS No. : 84162-80-1

CAT No. : KMR004041

Formula : C13H13F2NO2

FW : 253.2

View Details
Risperidone Impurity 5

Risperidone Impurity 5

CAS No. : 1797131-18-0

CAT No. : KMR004043

Formula : C11H15ClN2O2

FW : 242.7

View Details
Risperidone Impurity Adduct

Risperidone Impurity Adduct

CAS No. : NA

CAT No. : KMR004044

Formula : C35H39FN6O3

FW : 610.7

View Details
Risperidone isomer Degradation product

Risperidone isomer Degradation product

CAS No. : 1005191-81-0

CAT No. : KMR004045

Formula : C23H27FN4O2

FW : 410.5

View Details
Risperidone Piperidine Impurity

Risperidone Piperidine Impurity

CAS No. : 2379325-11-6

CAT No. : KMR004047

Formula : C24H25F2N3O2

FW : 425.5

View Details
Risperidone Synthetic Impurity

Risperidone Synthetic Impurity

CAS No. : 898542-33-1

CAT No. : KMR004049

Formula : C24H27FN4O2

FW : 422.5

View Details
(R)-9-Hydroxyrisperidone D4

(R)-9-Hydroxyrisperidone D4

CAS No. : NA

CAT No. : KMR004003

Formula : C23H23D4FN4O3

FW : 430.5

View Details
(S)-9-Hydroxyrisperidone D4

(S)-9-Hydroxyrisperidone D4

CAS No. : NA

CAT No. : KMR004004

Formula : C23H23D4FN4O3

FW : 430.5

View Details
7-Hydroxy Risperidone D4

7-Hydroxy Risperidone D4

CAS No. : 1215454-04-8

CAT No. : KMR004008

Formula : C23H23D4FN4O3

FW : 430.5

View Details
Risperidone D4

Risperidone D4

CAS No. : 1020719-76-9

CAT No. : KMR004019

Formula : C23H23D4FN4O2

FW : 414.5

View Details
Risperidone D6

Risperidone D6

CAS No. : 1225444-65-4

CAT No. : KMR004020

Formula : C23H21D6FN4O2

FW : 416.5

View Details
N-Nitroso Risperidone EP Impurity M

N-Nitroso Risperidone EP Impurity M

CAS No. : 2416230-38-9

CAT No. : KMR004010

Formula : C12H12FN3O2

FW : 249.2

View Details
N-Nitroso Risperidone Impurity 2

N-Nitroso Risperidone Impurity 2

CAS No. : 67659-30-7

CAT No. : KMR004012

Formula : C6H10N2O3

FW : 158.2

View Details
Risperidone Impurity 4

Risperidone Impurity 4

CAS No. : 41078-70-0

CAT No. : KMR004042

Formula : C11H11ClN2O

FW : 222.7

View Details
N-Nitroso Risperidone Impurity 1

N-Nitroso Risperidone Impurity 1

CAS No. : NA

CAT No. : KMR004011

Formula : C12H12FN3O2

FW : 249.2

View Details

About Us

K. M. Pharma Solution Pvt. Ltd., India (CIN: U72100GJ2023PTC141278), is a leading, innovation-driven company accredited by FDCA, GMP-GLP, ISO 9001:2015, and NABL (ISO/IEC 17025 & ISO 17034). Specializing in the design, synthesis, and characterization of pharmaceutical impurity standards and reference materials, we offer an extensive portfolio including nitrosamine impurities, pharmacopeial and non-pharmacopeial impurities, drug metabolites, glucuronides, process degradants, excipient-related impurities, unknown impurity isolation & structural elucidation, and stable isotope-labeled compounds.

As an integrated Contract Research, Development & Manufacturing Organization (CRDMO), we provide end-to-end scientific services — from early-stage discovery through to commercial supply — with a strong focus on quality, compliance, and customer satisfaction.

Contact Us

  • Unit No.101, Shivam Industrial park,
    Sarkhej-bavala NH=8A, At-Moraiya, Changodar,
    Ahmedabad (Gujarat), India - 382213
  • contact@kmpharma.in
  • +91 9898822121

© 2025 K.M.Pharma. All Rights Reserved