Oseltamivir intermediate CAS NO:204254-96-6

Oseltamivir intermediate,98% up Full name :ETHYL(3R,4S,5S)-4,5-EPOXY- 3-(1-ETHYL-PROPOXY)CYCLOHEX-1-ENE- 1-CARBOXYLATE

Oseltamivir intermediate 

CAS 204254-96-6

Full name:ETHYL(3R,4S,5S)-4,5-EPOXY-3-(1-ETHYL-PROPOXY)CYCLOHEX-1-ENE- 1-CARBOXYLATE

Items	Specification	Result
Description	White to off-white powder	Off-white powder
Identification	IR chromatograph conforms to characteristic peak of RS	Conforms
Loss on drying	Not more than 0.5%	0.10%
Specific optical rotation (1%w/v solution in methanol at 25,on dried basis)	Between -42°and -46°	-42.5°
Purity	Not less than 98.0%	99.9%
Assay ( on dried basis)	98.0%---102.0%	98.5%

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Oseltamivir intermediate CAS NO:204254-96-6