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tert-butyl n-hydroxycarbamate

CAS Number
36016-38-3
EC Number
252-836-2
Chemical Formula
C5H11NO3
Molecular Weight
133.15 g/mol

Description

Tert-butyl n-hydroxycarbamate (CAS 36016-38-3 ), commonly sourced under the name N-Boc-hydroxylamine, is a protected hydroxylamine reagent used in pharmaceutical synthesis and specialty chemical manufacturing. It provides a stable, handleable form of hydroxylamine functionality, enabling controlled introduction of the N–OH group into target molecules without the hazards associated with free hydroxylamine. In pharmaceutical intermediate synthesis, it serves as a key building block for constructing isoxazolines, hydroxyurea derivatives, and other nitrogen-containing scaffolds found in active pharmaceutical ingredients. Medicinal chemistry programs use it to install protected hydroxylamine groups during multi-step synthesis, with the Boc protecting group removed under standard acidic conditions at a late stage. Catalyst development programs employ it as a precursor to nitroxide-based and N-oxyl catalysts used in oxidation reactions. Specialty formulation research has explored its biocidal activity. Tert-butyl n-hydroxycarbamate is supplied as a white to off-white crystalline solid. It is available in research quantities through to multi-kilogram commercial lots for industrial use. Purity grades typically range from 97% to 99%+ as confirmed by HPLC or titration. Supply is generally positioned for pharmaceutical and fine chemical use with documentation packages including CoA. Spectral data is standard for GMP-adjacent procurement. This material is handled according to strict safety protocols to ensure stability and performance in sensitive chemical reactions. Contact us for supply of tert-butyl n-hydroxycarbamate Request Quote

Other Names (Synonyms)

N-Boc-hydroxylamine | N-tert-Butoxycarbonylhydroxylamine | tert-Butyl hydroxycarbamate | Carbamic acid, hydroxy-, 1,1-dimethylethyl ester | GJV9GPX5T3 | n-boc-hydroxyamine | 1,1-dimethylethyl N-hydroxycarbamate | Carbamic acid, N-hydroxy-, 1,1-dimethylethyl ester

Key Technical Features

  • High Purity Grade standard
  • Consistent Batch Quality
  • Full Regulatory & REACH Support
  • Global Logistics Network enabled

Physical Properties

Melting Point54-56 °C
Boiling Point245.66°C (rough estimate)
Density1.2510 (rough estimate)
AppearanceWhite to light pink crystalline powder
ColorWhite to light pink
FormCrystalline Powder
Water SolubilitySlightly soluble in water.
Refractive Index1.4120 (estimate)

Safety & Handling

Warning
GHS07· Irritant

Hazard Statements

H302Harmful if swallowed
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary Statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.
P264Wash … thoroughly after handling.
P270Do not eat, drink or smoke when using this product.
P271Use only outdoors or in a well-ventilated area.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P319Get medical advice/attention if you feel unwell.
P321Specific treatment (see … on this label).
P330Rinse mouth.
P405Store locked up.
P501Dispose of contents/container in accordance with local regulations.
P265Wash … thoroughly after handling.
P317Get emergency medical help.
P352IF ON SKIN: Wash with plenty of water.
P340IF INHALED: Remove person to fresh air and keep comfortable for breathing.
P317Get emergency medical help.
P317If eye irritation persists: Get medical advice/attention. Get emergency medical help.
P364Take off contaminated clothing and wash it before reuse.
P233Store in a well-ventilated place. Keep container tightly closed.
P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Trade & Regulatory

HS Code29280090
Storage Class11 - Combustible Solids
WGK (Germany)3