(1-Diazo-2-oxo-propyl)-phosphonic acid dimethyl ester, CAS No. 90965-06-3

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(1-Diazo-2-oxo-propyl)-phosphonic acid dimethyl ester CAS No.90965-06-3 / Cat No.EBD5184

Formula: C5H9N2O4P

Molecular Weight:192.11

Synonyms:

(1Z)-1-diazonio-1-(dimethoxyphosphoryl)prop-1-en-2-olate

(1-Diazo-2-oxopropyl)phosphonicaciddimethylester

Dimethyl(1-Diazo-2-oxopropyl)phosphonate

NNYV1&PO&O1&O1

Phosphonicacid,P-(1-diazo-2-oxopropyl)-,dimethylester

(1-diazo-2-oxo-propyl)-phosphonicaciddimethylesterbestmannohirareagent

1-diazoacetonylphosphonicaciddimethylester

dimethyl1-diazoacetonylphosphonate

ohira-bestmannreagent

dimethyl(1-diazo-2-oxopropyl)phosphanate

Ohira-Bestmann'sreagent

(1-Diazo-2-oxo-propyl)-phosphonicaciddimethylester

Dimethyl 1-diazo-2-oxopropylphosphonate

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Packaging	Purity	Availability	Price (USD)	Quantity
500.0g	95%	Available to ship on 16-Jan-2026	2295.65	- +	ADD TO CART
500.0g	96%	Available to ship on 16-Jan-2026	2009.94	- +	ADD TO CART

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1000.0g	95%	Available to ship on 16-Jan-2026	3796.57	- +	ADD TO CART
1000.0g	96%	Available to ship on 16-Jan-2026	3428.28	- +	ADD TO CART

1.0kg	96%	Available to ship on 16-Jan-2026	3575.6	- +	ADD TO CART
1.1kg	95%	Available to ship on 16-Jan-2026	3641.89	- +	ADD TO CART

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Properties
Safety Information
NMR Spectrum

Properties

Density:

0.800-0.850 g/mL at 20 °C
Flashing point:

2 °C
Storage temperature:

2-8°C
Coefficient of refraction:

n20/D 1.352-1.354

Safety Information

Symbol:
Signal words:

Danger
Hazard statements:

H225 Highly Flammable liquid and vapour.

H302 Harmful if swallowed.

H332 Harmful if inhaled.

H319 Causes serious eye irritation.
Precautionary statements:

P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking.

P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

NMR Spectrum

Prediction： 1H NMR (400 MHz, CDC13) 6 ppm 2.26 (s, 3 H), 3.82 (s, 3 H), 3.85 (s, 3 H).

¹H NMR

¹³C NMR