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The chiral phases, DNB-LEU or DNB-PHGLY, are prepared from N-3-5-dinitrobenzoyl protected derivatives of leucine or phenylgylcine, (which are then bonded to silica stationary phase). These phases are available in both the D- or the L- enantiomers of the amino acids.
The unique feature of amino-acid-derived chiral phases is that the elution order of enantiomers in the sample is dependent on the D- or L- chirality of the bonded amino acid. Therefore, the order of elution can be controlled by appropriate selection of stationary phase. This can be of tremendous advantage for those samples which contain a large excess of one enantiomer, in which case it is desirable to have the minor component elute first.
Many racemic acids and amines which cannot be resolved in their native form can be easily converted to amides or anilides which can be resolved by an amino-acid-derived chiral phase. The following compounds are candidates for amino-acid-derived chiral phases:

Aromatic alcohols	Aryl substituted phthalides
Aromatic amino acids	Aryl substituted lactams
Aromatic amino alcohols	Aryl substituted succinamides
Aromatic thiols	Aryl substituted hydantoins
Aromatic amines	Aryl substituted hydantoins
Aromatic sulfoxides	Aryl substituted hydantoins
Mandelic acid analogs	Aryl substituted hydantoins

Phase: D-DNB-LEU

Part #	Length x ID	Particle Size	Price	Buy
250046-03511	250 x 4.6 mm	5 µm	$700.00
150046-03511	150 x 4.6 mm	5 µm	$675.00
150046-03311	150 x 4.6 mm	3 µm	$750.00
100046-03311	100 x 4.6 mm	3 µm	$700.00
250040-03511	250 x 4.0 mm	5 µm	$700.00
150040-03511	150 x 4.0 mm	5 µm	$675.00
150040-03311	150 x 4.0 mm	3 µm	$750.00
100040-03311	100 x 4.0 mm	3 µm	$700.00
250030-03511	250 x 3.0 mm	5 µm	$700.00
150030-03511	150 x 3.0 mm	5 µm	$675.00
150030-03311	150 x 3.0 mm	3 µm	$750.00
100030-03311	100 x 3.0 mm	3 µm	$700.00
250020-03511	250 x 2.0 mm	5 µm	$750.00
150020-03511	150 x 2.0 mm	5 µm	$700.00
150020-03311	150 x 2.0 mm	3 µm	$775.00
100020-03311	100 x 2.0 mm	3 µm	$725.00

Phase: L-DNB-LEU

Part #	Length x ID	Particle Size	Price	Buy
250046-03512	250 x 4.6 mm	5 µm	$700.00
150046-03512	150 x 4.6 mm	5 µm	$675.00
150046-03312	150 x 4.6 mm	3 µm	$750.00
100046-03312	100 x 4.6 mm	3 µm	$700.00
250040-03512	250 x 4.0 mm	5 µm	$700.00
150040-03512	150 x 4.0 mm	5 µm	$675.00
150040-03312	150 x 4.0 mm	3 µm	$750.00
100040-03312	100 x 4.0 mm	3 µm	$700.00
250030-03512	250 x 3.0 mm	5 µm	$700.00
150030-03512	150 x 3.0 mm	5 µm	$675.00
150030-03312	150 x 3.0 mm	3 µm	$750.00
100030-03312	100 x 3.0 mm	3 µm	$700.00
250020-03512	250 x 2.0 mm	5 µm	$750.00
150020-03512	150 x 2.0 mm	5 µm	$700.00
150020-03312	150 x 2.0 mm	3 µm	$775.00
1000206-03312	100 x 2.0 mm	3 µm	$725.00

Phase: D-DNB-PHGLY

Part #	Length x ID	Particle Size	Price	Buy
250046-03513	250 x 4.6 mm	5 µm	$700.00
150046-03513	150 x 4.6 mm	5 µm	$675.00
150046-03313	150 x 4.6 mm	3 µm	$750.00
100046-03313	100 x 4.6 mm	3 µm	$700.00
250040-03513	250 x 4.0 mm	5 µm	$700.00
150040-03513	150 x 4.0 mm	5 µm	$675.00
150040-03313	150 x 4.0 mm	3 µm	$750.00
100040-03313	100 x 4.0 mm	3 µm	$700.00
250030-03513	250 x 3.0 mm	5 µm	$700.00
150030-03513	150 x 3.0 mm	5 µm	$675.00
150030-03313	150 x 3.0 mm	3 µm	$750.00
100030-03313	100 x 3.0 mm	3 µm	$700.00
250020-03513	250 x 2.0 mm	5 µm	$750.00
150020-03513	150 x 2.0 mm	5 µm	$700.00
150020-03313	150 x 2.0 mm	3 µm	$775.00
100020-03313	100 x 2.0 mm	3 µm	$725.00

Phase: L-DNB-PHGLY

Part #	Length x ID	Particle Size	Price	Buy
250046-03514	250 x 4.6 mm	5 µm	$700.00
150046-03514	150 x 4.6 mm	5 µm	$675.00
150046-03314	150 x 4.6 mm	3 µm	$750.00
100046-03314	100 x 4.6 mm	3 µm	$700.00
250040-03514	250 x 4.0 mm	5 µm	$700.00
150040-03514	150 x 4.0 mm	5 µm	$675.00
150040-03314	150 x 4.0 mm	3 µm	$750.00
100040-03314	100 x 4.0 mm	3 µm	$700.00
250030-03514	250 x 3.0 mm	5 µm	$700.00
150030-03514	150 x 3.0 mm	5 µm	$675.00
150030-03314	150 x 3.0 mm	3 µm	$750.00
100030-03314	100 x 3.0 mm	3 µm	$700.00
250020-03514	250 x 2.0 mm	5 µm	$750.00
150020-03514	150 x 2.0 mm	5 µm	$700.00
150020-03314	150 x 2.0 mm	3 µm	$775.00
100020-03314	100 x 2.0 mm	3 µm	$725.00

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