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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HCID 819691Generated: October 23, 2026

4,6-Dichloro-5-pyrimidinecarbaldehyde

ASISCHEM C51985 · TIMTEC-BB SBB005606 · 4,6-Dichloro-5-formylpyrimidine · 6-DichloropyriMidine-5-carboxaldehyde · 4,6-DICHLORO-5-PYRIMIDINECARBALDEHYDE · 4,6-DICHLORO-PYRIMIDINE-5-CARBALDEHYDE · 4,6-Dichloro-5-pyrimidine formaldehyde · 5-PyriMidinecarbaldehyde, 4,6-dichloro-

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4,6-Dichloro-5-pyrimidinecarbaldehyde molecular structure

Identifiers & Physical Properties

CAS No.5305-40-8
Molecular formulaC5H2Cl2N2O
Average molar mass176.99 g/mol
Monoisotopic mass175.95441804 g/mol
SMILESO=Cc1c(Cl)ncnc1Cl
InChIKeyXQSJHQXYQAUDFC-UHFFFAOYSA-N
PubChem CID819691
EC No.625-883-5
DTXSIDDTXSID30356108

Chemical & Physical Properties

XLogP1.6
Topological polar surface area42.9
Hydrogen bond donors0
Hydrogen bond acceptors3
Rotatable bonds1
Heavy atoms10
Formal charge0
Complexity123
Melting point66-71 °C
Boiling point92-93 °C(Press: 0.05 Torr)
Density1.588±0.06 g/cm3(Predicted)
Storage conditions2-8°C
pKa (acidity coefficient)-5.90±0.26(Predicted)
Physical statesolid
ColorYellow
InChIInChI=1S/C5H2Cl2N2O/c6-4-3(1-10)5(7)9-2-8-4/h1-2H
InChIKeyXQSJHQXYQAUDFC-UHFFFAOYSA-N
SMILESC1=NC(Cl)=C(C=O)C(Cl)=N1
CAS DataBase Reference5305-40-8(CAS DataBase Reference)
UNSPSC Code12352100
NACRESNA.22
GHS pictogramGHS07
Signal wordWarning
GHS hazard statementsH302-H315-H317-H319
GHS precautionary statementsP280-P301+P312+P330-P302+P352-P305+P351+P338
Personal protective equipment (PPE)dust mask type N95 (US), Eyeshields, Faceshields, Gloves
Hazard symbolsXi,Xn
Risk statements (R)36/37/38-43-36/38-22
Safety statements (S)26-36-36/37
Water hazard class (WGK)3
Hazard classIRRITANTAcute Tox. 4 OralEye Irrit. 2Skin Irrit. 2Skin Sens. 1
Customs code29335990
Storage class11 - Combustible Solids

Safety & Regulations

GHS classificationWarningH302 (97.2%): Harmful if swallowed [Warning Acute toxicity, oral]P261, P264, P264+P265, P270, P272, P280, P301+P317, P302+P352, P305+P351+P338, P321, P330, P332+P317, P333+P317, P337+P317, P362+P364, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 71 reports by companies from 5 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
Hazard Classes and CategoriesAcute Tox. 4 (97.2%)
Personal protective equipment (PPE)dust mask type N95 (US), Eyeshields, Faceshields, Gloves
Water hazard class (WGK)3
Customs code29335990
Risk statements (R)36/37/38-43-36/38-22
Signal wordWarning
GHS pictogramGHS07
Hazard symbolsXi,Xn
Safety statements (S)26-36-36/37
Hazard classIRRITANTAcute Tox. 4 OralEye Irrit. 2Skin Irrit. 2Skin Sens. 1
Storage class11 - Combustible Solids
GHS hazard statementsH302-H315-H317-H319
GHS precautionary statementsP280-P301+P312+P330-P302+P352-P305+P351+P338

Applications & Uses

Uses

4,6-Dichloropyrimidine-5-carboxaldehyde is used as a substrate in the synthesis of N-terminal surrogate in amino acid and peptide analogues.