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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HCID 9920397Generated: October 23, 2026

Tert-butyl Chloroformate

Tert-butyl carbonochloridate · tert-Butyl chloroforMate · tert-Butyl cyanoformate · Azacitidine Impurity 54 · ert-butylcarbonochloridate · tert-butoxycarbonyl chloride · Tert-butyl chloromethyl formate · Carbonochloridic acid, 1,1-diMethylethyl ester

https://huagongshe.com/en/chemical/9920397

Tert-butyl Chloroformate molecular structure

Identifiers & Physical Properties

CAS No.24608-52-4
Molecular formulaC5H9ClO2
Average molar mass136.58 g/mol
Monoisotopic mass136.02910721 g/mol
SMILESCC(C)(C)OC(=O)Cl
InChIKeyUJJDEOLXODWCGK-UHFFFAOYSA-N
PubChem CID9920397
DTXSIDDTXSID90432775

Chemical & Physical Properties

XLogP2.2
Topological polar surface area26.3
Hydrogen bond donors0
Hydrogen bond acceptors2
Rotatable bonds2
Heavy atoms8
Formal charge0
Complexity93.1
Melting point10 °C (decomp)
Boiling point3-4 °C(Press: 0.9-1.7 Torr)
Density1.084±0.06 g/cm3(Predicted)
Solubilitysol ether, toluene, and most organic aprotic solvents

Applications & Uses

Uses

T-Butyl Chloroformate is used as a reagent for the protection of amino groups, including amino acids.

Preparation & Synthesis

Preparation

T-Butyl Chloroformate should be prepared from t-butanol or potassium t-butoxide and phosgene shortly before use.