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A18742 4-Nitrophenyl chloroformate, 97%

CAS Number
Chloroformic acid 4-nitrophenyl ester

Stock No. Size Price ($) Quantity Availability
A18742-06 5g 33.60
A18742-14 25g 93.30
A18742-22 100g 271.00
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4-Nitrophenyl chloroformate, 97%


Chemical Properties

Formula Weight
Melting point
Boiling Point
Flash Point
Storage & Sensitivity
Keep Cold. Moisture Sensitive.
Soluble in acetone, chloroform, acetone, toluene and benzene.


4-Nitrophenyl chloroformate is used in the synthesis of poly(oxyethylene) modified dextrans. It is also used to prepare a cleavable, heterobifunctional cross-linker for reversible conjugation of amines to thiol-modified DNA. Further, it is used in the synthesis of mixed, activated carbonates, thiocarbonates and activated urethanes. In addition to this, it is used in the preparation of 4-nitrophenyl diazoacetate with diazomethane.


Moisture sensitive. Store in a cool place. Incompatible with water, acids, alcohols, ammonia, amines and strong bases.

Literature References

Reagent for protection of nucleoside alcohols. The carbonate derivatives readily undergo aqueous hydrolysis in the presence of imidazole: J. Org. Chem., 33, 3699 (1967). For use in the formation of a carbonate linker in an efficient N-terminal attachment methodology for solid phase peptide synthesis, see: Synlett, 1609 (2000).

Sarma, B. K.; Liu, X.; Wu, H.; Gao, Y.; Kodadek, T. Solid phase synthesis of 1,3,4-oxadiazin-5 (6R)-one and 1,3,4-oxadiazol-2-one scaffolds from acyl hydrazides. Org. Biomol. Chem. 2015, 13 (1), 59-63.

Lee, N. R.; Zhang, X.; Darna, M.; Dwoskin, L. P.; Zheng, G. Muscarinic acetylcholine receptor binding affinities of pethidine analogs. Bioorg. Med. Chem. Lett. 2015, 25 (22), 5032-5035.

GHS Hazard and Precautionary Statements

Hazard Statements: H301-H311-H314-H331-H335

Toxic if swallowed. Toxic in contact with skin. Causes severe skin burns and eye damage. Toxic if inhaled. May cause respiratory irritation.

Precautionary Statements: P260-P264b-P270-P271-P280-P303+P361+P353-P304+P340-P305+P351+P338-P310-P330-P331-P363-P501c

Do not breathe dust/fume/gas/mist/vapours/spray. Wash face, hands and any exposed skin thoroughly after handling Do not eat, drink or smoke when using this product. Use only outdoors or in a well-ventilated area. Wear protective gloves/protective clothing/eye protection/face protection. IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a POISON CENTER or doctor/physician. Rinse mouth. Do NOT induce vomiting. Wash contaminated clothing before reuse. Dispose of contents/ container to an approved waste disposal plant

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