6-(5-Chloro-2-pyridyl)-6,7-dihydro-7-hydroxy-5H-pyrrolo[3,4-b]pyrazin-5-one - ≥97% , CAS No.43200-81-3

CAS: 43200-81-3 Cat. No.: C354615 Molecular Weight: 262.65 EC Number: 256-139-4
AVAILABLE TO ORDER
GRADE & PURITY ≥97%
Synonyms
SCHEMBL1320897 | SCHEMBL654863 | 6-(5-chloropyridin-2-yl)-5-hydroxy-7-oxo-5,6-dihydroprolo(3,4b)pyrazine | ZOPICLONE IMPURITY B [EP IMPURITY] | 6-(5-chloro-2-pyridyl)-7-hydroxy-6,7-dihydro-5h-pyrrolo[3,4-b]pyrazine-5-on | AKOS025294760 | (7rs)-6-(5-chloro
Storage
Store at -20°C
Shipped In
Ice chest + Ice pads
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
250mg
C354615-250mg
3

$42.90

$64.90
Save $22.00 (33.90%)
1g
C354615-1g
3

$55.90

$83.90
Save $28.00 (33.37%)
5g
C354615-5g
3

$143.90

$215.90
Save $72.00 (33.35%)
25g
C354615-25g
2

$312.90

$469.90
Save $157.00 (33.41%)
Enter a quantity for the sizes you want to add.
🧪

Why this grade

≥97% for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Store at -20°C Ships Ice chest + Ice pads Check lot-specific COA for exact specifications.

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Quality documents

SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.

📚

Literature proof

Cited in 0 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Overview

6-(5-Chloro-2-pyridyl)-6,7-dihydro-7-hydroxy-5H-pyrrolo[3,4-b]pyrazin-5-one is an impurity known as eszopiclone impurity B.

Specifications

Synonyms
SCHEMBL1320897 | SCHEMBL654863 | 6-(5-chloropyridin-2-yl)-5-hydroxy-7-oxo-5, 6-dihydroprolo(3, 4b)pyrazine | ZOPICLONE IMPURITY B [EP IMPURITY] | 6-(5-chloro-2-pyridyl)-7-hydroxy-6, 7-dihydro-5h-pyrrolo[3, 4-b]pyrazine-5-on | AKOS025294760 | (7rs)-6-(5-chloro
Specifications & Purity
≥97%
Storage
Store at -20°C
Shipped In
Ice chest + Ice pads
This product requires cold chain shipping. Ground and other economy services are not available.
Purity
≥97%
Names and Identifiers
Pubchem Sid504764225
Pubchem Sid Urlhttps://pubchem.ncbi.nlm.nih.gov/substance/504764225
Canonical SmilesC1=CC(=NC=C1Cl)N2C(C3=NC=CN=C3C2=O)O
IUPAC Name6-(5-chloropyridin-2-yl)-7-hydroxy-7H-pyrrolo[3,4-b]pyrazin-5-one
InChIKeyFUUXOEKDNNWZTR-UHFFFAOYSA-N
INCHI1S/C11H7ClN4O2/c12-6-1-2-7(15-5-6)16-10(17)8-9(11(16)18)14-4-3-13-8/h1-5,10,17H
Isomeric SMILES C1=CC(=NC=C1Cl)N2C(C3=NC=CN=C3C2=O)O
Molecular Weight 262.65
Reaxy-Rn 754787
Reaxys-RN_link_address https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=754787&ln=

Documentation

📋 Safety Data Sheet (SDS)

Comprehensive hazard, handling, storage, and regulatory compliance document.

Download SDS →

✅ Certificate of Analysis (COA)

Lot-specific quality data. Enter your lot number to retrieve the exact COA.

Look up COA →

📊 Datasheet

Quick-reference summary of product specifications and applications.

View datasheet →

🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

View spec sheet →

Advanced Data

Taxonomic Classification

Taxonomy Tree

KingdomOrganic compounds
SuperclassOrganoheterocyclic compounds
ClassPyrrolopyrazines
SubclassCyclopyrrolones
Intermediate Tree Nodes Not available
Direct ParentCyclopyrrolones
Alternative Parents 2-heteroaryl carboxamides  Pyridines and derivatives  Pyrazines  Imidolactams  Aryl chlorides  Tertiary carboxylic acid amides  Heteroaromatic compounds  Lactams  Azacyclic compounds  Alkanolamines  Organooxygen compounds  Organochlorides  Organic oxides  Hydrocarbon derivatives  
Molecular FrameworkAromatic heteropolycyclic compounds
Substituents Cyclopyrrolone - 2-heteroaryl carboxamide - Aryl chloride - Aryl halide - Imidolactam - Pyridine - Pyrazine - Heteroaromatic compound - Tertiary carboxylic acid amide - Carboxamide group - Lactam - Alkanolamine - Carboxylic acid derivative - Azacycle - Organohalogen compound - Organic nitrogen compound - Hydrocarbon derivative - Organic oxide - Organic oxygen compound - Organochloride - Organonitrogen compound - Organooxygen compound - Aromatic heteropolycyclic compound
DescriptionThis compound belongs to the class of organic compounds known as cyclopyrrolones. These are compounds belonging to a family of pyridin-2-ylpyrrole based chemicals. The pyrrole is usually fused to a benzene, pyrimidine, or dithiin.
External Descriptors Not available
3D Structure
Interactive Chemical Structure Model





Certificates(CoA,COO,BSE/TSE and Analysis Chart)
C of A & Other Certificates(BSE/TSE, COO):
Analytical Chart:

Find and download the COA for your product by matching the lot number on the packaging.

4 results found

Lot NumberCertificate TypeDateItem
E2219070Certificate of AnalysisMar 03, 2025 C354615
E2219077Certificate of AnalysisMar 03, 2025 C354615
E2219078Certificate of AnalysisMar 03, 2025 C354615
E2219086Certificate of AnalysisMar 03, 2025 C354615
Chemical and Physical Properties
SolubilitySoluble in DMSO, and methanol.
Refractive Indexn20D1.72 (Predicted)
Boil Point(°C)~525.24° C at 760 mmHg (Predicted)
Melt Point(°C)240-242° C
Molecular Weight262.650 g/mol
XLogP30.100
Hydrogen Bond Donor Count1
Hydrogen Bond Acceptor Count5
Rotatable Bond Count1
Exact Mass262.026 Da
Monoisotopic Mass262.026 Da
Topological Polar Surface Area79.200 Ų
Heavy Atom Count18
Formal Charge0
Complexity343.000
Isotope Atom Count0
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count1
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
The total count of all stereochemical bonds0
Covalently-Bonded Unit Count1
Solution Calculators
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