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57440-57-0 Usage


A 250-mL round-bottomed flflask equipped with a Dean–Stark trap and reflflux condenser was charged with the ketone (5.2 g, 33.3 mmol) and pyrrolidine (2.4 mL, 33.3 mmol) in anhydrous benzene (200 mL). The solution was reflfluxed for 8 h until no more H2O was collected in the Dean–Stark trap. The Dean–Stark trap was removed and replaced with a distillation head, and the benzene was removed by distillation. The product was distilled (0.2 torr, 105 oC) to give the enamine (4.78 g, 69%) as a yellow viscous oil, which was used immediately to avoid decomposition. Reference: Davis, K. M.; Carpenter, B. K. J. Org. Chem. 1996, 61, 4617–4622.

Check Digit Verification of cas no

The CAS Registry Mumber 57440-57-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,4,4 and 0 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 57440-57:
130 % 10 = 0
So 57440-57-0 is a valid CAS Registry Number.



According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 19, 2017

Revision Date: Aug 19, 2017


1.1 GHS Product identifier

Product name 1-(1,4-dioxaspiro[4.5]dec-7-en-8-yl)pyrrolidine

1.2 Other means of identification

Product number -
Other names -

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

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