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2,2,2-Trichloro-1,1-dimethylethyl chloroformate

CAS No.
66270-36-8
Chemical Name:
2,2,2-Trichloro-1,1-dimethylethyl chloroformate
Synonyms
TCBOC-CHLORIDE;2,2,2-trichloro-1,1-dimethylethyl ester;β,β,β-trichloro-tert-butyl chloroformate;2,2,2-Trichloro-tert-butyl chloroformate;2,2,2-trichloro-1,1-dimethyl chloroformate;β,β,β-trichloro-tert-butoxycarbonyl chloride;2,2,2-trichloro-1,1-dimethyethyl chloroformate;2,2,2-Trichloro-1,1-dimethylethyl chloroformate;BETA,BETA,BETA-TRICHLORO-TERT-BUTYL CHLOROFORMATE;2,2,2-Trichloro-1,1-diMethylethyl chloroforMate 96%
CBNumber:
CB6341886
Molecular Formula:
C5H6Cl4O2
Molecular Weight:
239.91
MDL Number:
MFCD00000801
MOL File:
66270-36-8.mol
MSDS File:
SDS
TDS File:
TDS
Last updated:2026-09-12 18:54:13

2,2,2-Trichloro-1,1-dimethylethyl chloroformate Properties

Melting point 28-30 °C(lit.)
Boiling point 83-84 °C14 mm Hg(lit.)
Density 1.4953 (estimate)
storage temp. 2-8°C
solubility ethanol: soluble10%, clear, colorless
form solid
BRN 1935464
InChI InChI=1S/C5H6Cl4O2/c1-4(2,5(7,8)9)11-3(6)10/h1-2H3
InChIKey GMELMFSDPDSXOZ-UHFFFAOYSA-N
SMILES C(Cl)(OC(C)(C)C(Cl)(Cl)Cl)=O
FDA UNII ND4GQH3PK3
UNSPSC Code 12352100
NACRES NA.22

SAFETY

Risk and Safety Statements

Symbol(GHS)  Corrosion (GHS05)Skull and Crossbones (GHS06)
GHS05,GHS06
Signal word  Danger
Hazard statements  H301+H311+H331-H314
Precautionary statements  P260-P270-P280-P303+P361+P353-P304+P340+P310-P305+P351+P338
PPE Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges
Hazard Codes  T
Risk Statements  23/24/25-34
Safety Statements  26-36/37/39-45
RIDADR  UN 2928 6.1/PG 2
WGK Germany  3
4.5-10-19-21
HazardClass  6.1(a)
PackingGroup  II
Storage Class 6.1A - Combustible acute toxic Cat. 1 and 2
very toxic hazardous materials
Hazard Classifications Acute Tox. 3 Oral
Skin Corr. 1B

2,2,2-Trichloro-1,1-dimethylethyl chloroformate price More Price(8)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 226505 2,2,2-Trichloro-1,1-dimethylethyl chloroformate 96% 66270-36-8 5g $101 2026-04-30 Buy
Sigma-Aldrich 226505 2,2,2-Trichloro-1,1-dimethylethyl chloroformate 96% 66270-36-8 25g $371 2026-04-30 Buy
aablocks AA003F3Y 2,2,2-Trichloro-1,1-dimethylethyl chloroformate 97% 66270-36-8 1g $14 2026-05-28 Buy
aablocks AA003F3Y 2,2,2-Trichloro-1,1-dimethylethyl chloroformate 97% 66270-36-8 5g $47 2026-05-28 Buy
aablocks AA003F3Y 2,2,2-Trichloro-1,1-dimethylethyl chloroformate 97% 66270-36-8 10g $74 2026-05-28 Buy
Product number Packaging Price Buy
226505 5g $101 Buy
226505 25g $371 Buy
AA003F3Y 1g $14 Buy
AA003F3Y 5g $47 Buy
AA003F3Y 10g $74 Buy

2,2,2-Trichloro-1,1-dimethylethyl chloroformate Chemical Properties,Uses,Production

Uses

Used as easily removable acid- and base-stable protecting group for nitrogen, including amino acids and nucleosides; protecting group for alcohols.

General Description

The solvolysis rate constants of 2,2,2-trichloro-1,1-dimethylethyl chloroformate in binary and pure solvents was studied.

Synthesis

2,2,2-Trichloro-t-butoxycarbonyl Chloride is prepared from trichloro-t-butanol with Phosgene1 or triphosgene (Bis(trichloromethyl) Carbonate) (eq 1).

2,2,2-Trichloro-1,1-dimethylethyl chloroformate Preparation Products And Raw materials

Raw materials

Preparation Products

2,2,2-Trichloro-1,1-dimethylethyl chloroformate Suppliers

Global( 65)Suppliers
Supplier Tel Email Country ProdList Advantage
BioPharmaMatrix,Inc. 0510-86010668 13395169561; sales@biopharmamatrix.com China 4976 55
Energy Chemical 400-0056266 sales8178@energy-chemical.com China 44850 61
Shanghai Hanhong Scientific Co.,Ltd. 021-54306202 13764082696 info@hanhongsci.com China 42917 64
Shanghai Topbiochem Technology Co., Ltd 021-58170097 info@topbiochem.com China 9513 58
Bide Pharmatech Ltd. 400-164-7117 18317119277 product02@bidepharm.com China 40000 60
Nanjing Datang Pharmaceutical Technology Co., Ltd. 025-84341491 13951930983 821832400@qq.com China 300 58
Tianjin Anhao Biological Technology Co., Ltd. sales@ahpharmatech.com China 5734 55
Sigma-Aldrich 021-61415566 800-8193336 orderCN@merckgroup.com China 51389 80
Shanghai YuanYe Biotechnology Co., Ltd. 15026964105 2881489226@qq.com China 89667 60
parabiochem 025-83453382-8005 sale@parabiochem.com China 9577 55
TCBOC-CHLORIDE BETA,BETA,BETA-TRICHLORO-TERT-BUTOXYCARBONYL CHLORIDE BETA,BETA,BETA-TRICHLORO-TERT-BUTYL CHLOROFORMATE Carbonochloridic acid, 2,2,2-trichloro-1,1-dimethylethyl ester β,β,β-trichloro-tert-butoxycarbonyl chloride β,β,β-trichloro-tert-butyl chloroformate TCBoc-chloride, β,β,β-Trichloro-tert-butyl chloroformate, β,β,β-Trichloro-tert-butoxycarbonyl chloride Chloridocarbonic acid 2,2,2-trichloro-1,1-dimethylethyl ester 1,1,1-trichloro-2-Methylpropan-2-yl carbonochloridate 2,2,2-Trichloro-1,1-diMethylethyl chloroforMate 96% TCBoc-chloride, β,β,β-Trichloro-tert-butoxycarbonyl chloride 2,2,2-trichloro-1,1-dimethyethyl chloroformate 2,2,2-trichloro-1,1-dimethyl chloroformate 2,2,2-Trichloro-1,1-dimethylethyl carbonochloridate 1,1,1-Trichloro-2-methyl-2-propyl Carbonochloridate 2,2,2-Trichloro-tert-butyl chloroformate 2,2,2-trichloro-1,1-dimethylchloromacetic acidester 2,2,2-trichloro-1,1-dimethylethyl ester 2,2,2-Trichloro-1,1-dimethylethyl chloroformate 66270-36-8 ClCO2CCH32CCl3 Building Blocks Carbonyl Compounds Organic Building Blocks Acid Halides CHLOROFORMATES