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4-AA CAS 76855-69-1

Identification

Product Name

4-AA

CAS

76855-69-1

EC No.

408-050-9

Cat. No.

A1110359020

Formula

C13H25NO4Si

M.W.

287.43

Synonyms

4-AOSA; Acetoxyazetidinone;  4-acetoxyazetidin-2-one; Acetoxysilyloxyazetidinone; (2R,3R)-3-[(1R)-1-{[tert-butyl(dimethyl)silyl]oxy}ethyl]-4-oxoazetidin-2-yl acetate; (3R,4R)-4-acetoxy-3-(R) (T-butyldimethylsilylyloxy)ethyl)2-azetidinane; AOSA;
(3R,4R)-4- Acetoxy-3-[(R)-1-tert-(Butyldimethylsilyloxy)ethyl]-2-Azetidinone; (3S,4R)-4-Acetxoy-3-[(R)-1-(tert-butyldimethylsilyloxy)ethyl]azetidin-2-one(AOSA); (3s,4r)-4-acetoxy-3-((r)-1-(tert-butyldimethylsilyloxy)ethyl)azetidin-2-one; (3R,4R)-4-acetoxy-3-[(R)-1-(t-butyldimethylsilyloxy)ethyl]-2-azetidinone; (3S,4R)-4-Acetoxy-3-[(R)-1-(tert- butyldimethylsilyloxy)ethyl]azetidin-2-one

Application

An acetoxyazetidinone derivative used as an intermediate in the preparation of carbapenem antibiotics.

Specification

Appearance

White to light yellow crystalline powder

Appearance of solution

Clear and not more intensely colored than BY

Assay

95.0% to 102.0%

Identification

IR Corresponds with that of CRS standard

Water

1.0% max.

H2B1a/(H2B1a+H2B1b)

90.0% min.

Related substances

Individual impurities (RRT1.3-1.5)   2.5%max.

Any other individual impurities  1.0%max.

Total impurity  5%max.

Disregard limit  0.05%max.

Ethanol

5.0% max.

Formamide

3.0% max.

Heavy metals

0.002% max.

Sulfated ash

0.1% max.

Specific optical rotation (anhydrous and solvent-free substance)

-17° to 20°

Physical Data

Appearance

White to off-white powder

Solubility

Soluble in chloroform and methanol

Refractive indexη20D

1.464

Storage

Store at 2-8℃

Melting point

107-109℃

Boiling point

358.32℃ at 760 mmHg

Flash point

170.51℃

Density

1.039 g/cm3

Grade

in house; 99%

Packing

Packaging details: Inner PP bag + Outer Al foil bag/tin/drum;

               We can change some conditions according to client's request.

Delivery time: within 7days;

Risk codes: R 36-43-51/53

Safety codes: S 24-26-37-61
irritant; Dangerous for the environment;

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