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487406

Sigma-Aldrich

4-Methoxybenzyl isocyanate

98%

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About This Item

Linear Formula:
CH3OC6H4CH2NCO
CAS Number:
56651-60-6
Molecular Weight:
163.17
MDL number:
MFCD00673064
UNSPSC Code:
12352100
PubChem Substance ID:
24872270
NACRES:
NA.22

Assay

98%

refractive index

n20/D 1.433 (lit.)

bp

60-66 °C/0.6 mmHg (lit.)

density

1.143 g/mL at 25 °C (lit.)

storage temp.

2-8°C

SMILES string

COc1ccc(CN=C=O)cc1

InChI

1S/C9H9NO2/c1-12-9-4-2-8(3-5-9)6-10-7-11/h2-5H,6H2,1H3

InChI key

QRBHVARIMDDOOV-UHFFFAOYSA-N

General description

4-Methoxybenzyl isocyanate (PMBNCO), also known as p-methoxybenzyl isocyanate, is an organic building block containing an isocyanate group. Its enthalpy of vaporization at boiling point has been reported.

Application

4-Methoxybenzyl isocyanate (p-Methoxybenzyl isocyanate) may be used in the synthesis of 1-(4-methoxybenzyl)-3-{2-[(4-nitrophenyl)amino]ethyl}urea and 1-(4-methoxybenzyl)-3-{2-[(5-nitropyridin-2-yl)amino]ethyl} urea.
It may be used in the multi-step synthesis of:
  • diimidazodiazepine containing 5:7:5-fused heterocycle
  • 2-deoxy-2-ureido-D-ribo-hexulofuranosonamide
  • bicyclic guanidine core of batzelladine A

Pictograms

Health hazardExclamation mark
GHS08,GHS07

Signal Word

Danger

Hazard Classifications

Acute Tox. 4 Dermal - Acute Tox. 4 Inhalation - Acute Tox. 4 Oral - Eye Irrit. 2 - Resp. Sens. 1 - Skin Irrit. 2 - Skin Sens. 1 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

WGK

WGK 3

Flash Point(F)

235.4 °F - closed cup

Flash Point(C)

113 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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185353

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Bioscience, Biotechnology, and Biochemistry, 60(7), 1198-1200 (1996)
Raj Kumar et al.
Organic letters, 10(20), 4681-4684 (2008-09-26)
The first synthesis of a novel 5:7:5-fused heterocyclic ring system, a diimidazodiazepine, is reported. The propensity of the ring system to undergo facile, acid-catalyzed nucleophilic addition reactions by neutral carbon and nitrogen nucleophiles has been explored. The ring system has
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Yaws CL.
Thermophysical Properties of Chemicals and Hydrocarbons, 567-567 (2014)
Michael A Arnold et al.
Journal of the American Chemical Society, 128(40), 13255-13260 (2006-10-05)
A diastereoselective [4 + 2]-annulation of vinyl carbodiimides with chiral N-alkyl imines has been developed to access the stereochemically rich polycyclic guanidine cores of the batzelladine alkaloids. Application of this strategy, together with additional key steps such as long-range directed

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