Chiral standards are  used in the chiral chromatography to measure to measure the difference in the absorption coefficients between left handed and right handed cicularly polarized light.

CAS Number
1105067-87-5(Ca Salt); 1371615-56-3(Na Salt); 887196-24-9(Freebase)
CAS Number
433289-83-9(Ca salt), 433289-84-0(Freebase);1516864-05-3(sodium salt)
CAS Number
148217-40-7(Na salt); 1046118-41-5(Ca salt); 906552-18-9(Base)
CAS Number
120202-69-9
Alternate CAS Number
120202-71-3(Salt)
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581772-29-4 (free base); 929540-41-0 (Ca salt) ; 862260-38-6 (Na salt)
CAS Number
1105067-93-3 (free base)
CAS Number
1391052-82-6
CAS Number
1026009-77-7;1093072-86-6(Escitalopram - Impurity L (Oxalate Salt));