Tab. 3.

Results of recovery study:

Name of the impurity	Amount spikeda			% Recoveryb
	50%	100%	150%	50%	100%	150%
10-Deacetylbaccatin III	0.15	0.3	0.45	99.1	100.2	99.3
2′,3′-Epidocetaxel	0.15	0.3	0.45	100.1	100.5	99.4
2′-Epidocetaxel	0.15	0.3	0.45	98.2	99.5	98.2
Oxetane ring opened impurity of Docetaxel	0.15	0.3	0.45	97.8	98.2	97.5
10-Oxodocetaxel	0.15	0.3	0.45	99.6	99.7	96.7
7′-Epidocetaxel	0.15	0.3	0.45	96.4	95.7	97.5
10-Oxo-7′-epidocetaxel	0.15	0.3	0.45	98.9	97.2	96.5

^aAmount of impurities spiked with respect to 0.30% specification level individually to 0.8 mg/ml of docetaxel;

^bMean±%RSD for three determinations.