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Pharmaceutical Reference Standards

Azelastine Hydrochloride

Picture of Azelastine Hydrochloride
CAT No: SZ-A043001
CAS No: 79307-93-0
Mol.F. : C22H24ClN3O : HCl
Mol.Wt. : 381.9 : 36.5
Inv. Status: In Stock
Rel. CAS No : 58581-89-8 (free base)
SZ-A043001
CAS No:79307-93-0
Mol.F.: C22H24ClN3O : HCl
Mol.Wt.: 381.9 : 36.5
Inv. Status: In Stock
Rel. CAS No : 58581-89-8 (free base)

Azelastine EP Impurity A

Picture of Azelastine EP Impurity A
CAT No: SZ-A043002
CAS No: 613-94-5
Mol.F. : C7H8N2O
Mol.Wt. : 136.2
Inv. Status: In Stock
SZ-A043002
CAS No:613-94-5
Mol.F.: C7H8N2O
Mol.Wt.: 136.2
Inv. Status: In Stock

Azelastine EP Impurity B

Picture of Azelastine EP Impurity B
CAT No: SZ-A043003
CAS No: 117078-69-0
Mol.F. : C14H21N3O : HCl
Mol.Wt. : 247.3 : 36.5
Inv. Status: Limited Stock
Rel. CAS No : 110406-94-5 (free base)
SZ-A043003
CAS No:117078-69-0
Mol.F.: C14H21N3O : HCl
Mol.Wt.: 247.3 : 36.5
Inv. Status: Limited Stock
Rel. CAS No : 110406-94-5 (free base)

Azelastine EP Impurity C

Picture of Azelastine EP Impurity C
CAT No: SZ-A043004
CAS No: 53242-76-5
Mol.F. : C15H11ClO3
Mol.Wt. : 274.7
Inv. Status: In Stock
SZ-A043004
CAS No:53242-76-5
Mol.F.: C15H11ClO3
Mol.Wt.: 274.7
Inv. Status: In Stock

Azelastine EP Impurity D

Picture of Azelastine EP Impurity D
CAT No: SZ-A043005
CAS No: 53242-88-9
Mol.F. : C15H11ClN2O
Mol.Wt. : 270.7
Inv. Status: In Stock
SZ-A043005
CAS No:53242-88-9
Mol.F.: C15H11ClN2O
Mol.Wt.:  270.7
Inv. Status: In Stock

Azelastine EP Impurity E

Picture of Azelastine EP Impurity E
CAT No: SZ-A043006
CAS No: 20526-97-0
Mol.F. : C15H9ClO2
Mol.Wt. : 256.7
Inv. Status: In Stock
SZ-A043006
CAS No:20526-97-0
Mol.F.: C15H9ClO2
Mol.Wt.: 256.7
Inv. Status: In Stock

(R)-Azelastine HCl

Picture of (R)-Azelastine HCl
CAT No: SZ-A043007
CAS No: 153408-28-7
Mol.F. : C22H24ClN3O : HCl
Mol.Wt. : 381.9 : 36.5
Inv. Status: Custom Synthesis
Rel. CAS No : 143228-84-6 (free base)
SZ-A043007
CAS No:153408-28-7
Mol.F.: C22H24ClN3O : HCl
Mol.Wt.: 381.9 : 36.5
Inv. Status: Custom Synthesis
Rel. CAS No : 143228-84-6 (free base)

(S)-Azelastine HCl

Picture of (S)-Azelastine HCl
CAT No: SZ-A043008
CAS No: 153408-27-6
Mol.F. : C22H24ClN3O : HCl
Mol.Wt. : 381.9 : 36.5
Inv. Status: Custom Synthesis
Rel. CAS No : 143228-85-7 (free base)
SZ-A043008
CAS No:153408-27-6
Mol.F.: C22H24ClN3O : HCl
Mol.Wt.: 381.9 : 36.5
Inv. Status: Custom Synthesis
Rel. CAS No : 143228-85-7 (free base)

N-Desmethyl Azelastine

Picture of N-Desmethyl Azelastine
CAT No: SZ-A043009
CAS No: 47491-38-3
Mol.F. : C21H22ClN3O
Mol.Wt. : 367.9
Inv. Status: Custom Synthesis
SZ-A043009
CAS No:47491-38-3
Mol.F.: C21H22ClN3O 
Mol.Wt.: 367.9
Inv. Status: Custom Synthesis

Azelastine 5-Member-Cyclic-Isomer HCl

Picture of Azelastine 5-Member-Cyclic-Isomer HCl
CAT No: SZ-A043010
CAS No: 117078-70-3
Mol.F. : C22H24ClN3O : HCl
Mol.Wt. : 381.9 : 36.5
Inv. Status: In Stock
Rel. CAS No : 756415-37-9 (free base)
SZ-A043010
CAS No:117078-70-3
Mol.F.: C22H24ClN3O : HCl
Mol.Wt.: 381.9 : 36.5
Inv. Status: In Stock
Rel. CAS No : 756415-37-9 (free base)

Azelastine 3-Chloro-Isomer HCl

Picture of Azelastine 3-Chloro-Isomer HCl
CAT No: SZ-A043011
CAS No: NA
Mol.F. : C22H24ClN3O : HCl
Mol.Wt. : 381.9 : 36.5
Inv. Status: Out of Stock
Rel. CAS No : 37933-01-0 (free base)
SZ-A043011
CAS No:NA
Mol.F.: C22H24ClN3O : HCl
Mol.Wt.: 381.9 : 36.5
Inv. Status: Out of Stock
Rel. CAS No : 37933-01-0 (free base)

Azelastine USP Related Compound F

Picture of Azelastine USP Related Compound F
CAT No: SZ-A043012
CAS No: 640279-88-5
Mol.F. : C22H24ClN3O2
Mol.Wt. : 397.9
Inv. Status: In Stock
SZ-A043012
CAS No:640279-88-5
Mol.F.: C22H24ClN3O2 
Mol.Wt.: 397.9
Inv. Status: In Stock

(R)-Azelastine N-Oxide (Mixture of Diastereomers)

Picture of (R)-Azelastine N-Oxide (Mixture of Diastereomers)
CAT No: SZ-A043013
CAS No: 1346617-18-2
Mol.F. : C22H24ClN3O2
Mol.Wt. : 397.9
Inv. Status: Custom Synthesis
SZ-A043013
CAS No:1346617-18-2
Mol.F.: C22H24ClN3O2 
Mol.Wt.: 397.9
Inv. Status: Custom Synthesis

(S)-Azelastine N-Oxide

Picture of (S)-Azelastine N-Oxide
CAT No: SZ-A043014
CAS No: 1346617-06-8
Mol.F. : C22H24ClN3O2
Mol.Wt. : 397.9
Inv. Status: Custom Synthesis
SZ-A043014
CAS No:1346617-06-8
Mol.F.: C22H24ClN3O2 
Mol.Wt.: 397.9
Inv. Status: Custom Synthesis

Azelastine Impurity 1 HCl

Picture of Azelastine Impurity 1 HCl
CAT No: SZ-A043015
CAS No: NA
Mol.F. : C22H24ClN3O : HCl
Mol.Wt. : 381.9 : 36 .5
Inv. Status: Custom Synthesis
SZ-A043015
CAS No:NA
Mol.F.: C22H24ClN3O : HCl 
Mol.Wt.: 381.9 : 36 .5
Inv. Status: Custom Synthesis

Azelastine Impurity 2 HCl

Picture of Azelastine Impurity 2 HCl
CAT No: SZ-A043016
CAS No: NA
Mol.F. : C23H24ClN3O : HCl
Mol.Wt. : 393.9 : 36 .5
Inv. Status: Custom Synthesis
SZ-A043016
CAS No:NA
Mol.F.: C23H24ClN3O : HCl
Mol.Wt.: 393.9 : 36 .5
Inv. Status: Custom Synthesis

Azelastine Impurity 3 HCl

Picture of Azelastine Impurity 3 HCl
CAT No: SZ-A043017
CAS No: NA
Mol.F. : C23H24ClN3O : HCl
Mol.Wt. : 393.9 : 36 .5
Inv. Status: Custom Synthesis
SZ-A043017
CAS No:NA
Mol.F.: C23H24ClN3O : HCl 
Mol.Wt.: 393.9 : 36 .5
Inv. Status: Custom Synthesis

Azelastine Intermediate

Picture of Azelastine Intermediate
CAT No: SZ-A043018
CAS No: 19869-42-2
Mol.F. : C7H13NO : HCl
Mol.Wt. : 127.2 : 36.5
Inv. Status: In Stock
Rel. CAS No : 1859-33-2 (free base)
SZ-A043018
CAS No:19869-42-2
Mol.F.: C7H13NO : HCl
Mol.Wt.: 127.2 : 36.5
Inv. Status: In Stock
Rel. CAS No : 1859-33-2 (free base)

Phthalazine

Picture of Phthalazine
CAT No: SZ-A043019
CAS No: 253-52-1
Mol.F. : C8H6N2
Mol.Wt. : 130.2
Inv. Status: In Stock
SZ-A043019
CAS No:253-52-1
Mol.F.: C8H6N2
Mol.Wt.: 130.2
Inv. Status: In Stock

1-Phthalazinone

Picture of 1-Phthalazinone
CAT No: SZ-A043020
CAS No: 119-39-1
Mol.F. : C8H6N2O
Mol.Wt. : 146.1
Inv. Status: In Stock
SZ-A043020
CAS No:119-39-1
Mol.F.: C8H6N2O
Mol.Wt.: 146.1
Inv. Status: In Stock

1-Chlorophthalazine 

Picture of 1-Chlorophthalazine 
CAT No: SZ-A043021
CAS No: 5784-45-2
Mol.F. : C8H5ClN2
Mol.Wt. : 164.6
Inv. Status: In Stock
SZ-A043021
CAS No:5784-45-2
Mol.F.: C8H5ClN2
Mol.Wt.: 164.6
Inv. Status: In Stock

N-Methyl-4-aminobutyric acid

Picture of N-Methyl-4-aminobutyric acid
CAT No: SZ-A043022
CAS No: 1119-48-8
Mol.F. : C5H11NO2
Mol.Wt. : 117.1
Inv. Status: In Stock
SZ-A043022
CAS No:1119-48-8
Mol.F.: C5H11NO2
Mol.Wt.: 117.1
Inv. Status: In Stock

Azelastine Impurity 4

Picture of Azelastine Impurity 4
CAT No: SZ-A043025
CAS No: 174826-63-2
Mol.F. : C9H17N3O
Mol.Wt. : 183.3
Inv. Status: Custom Synthesis
SZ-A043025
CAS No:174826-63-2
Mol.F.: C9H17N3O
Mol.Wt.: 183.3
Inv. Status: Custom Synthesis

Stable Isotopes and Metabolites

Azelastine D4 Hydrochloride

Picture of Azelastine D4 Hydrochloride
CAT No: SZ-A043D02
CAS No: NA
Mol.F. : C22H20D4ClN3O : HCl
Mol.Wt. : 385.9 : 36.5
Inv. Status: Custom Synthesis
SZ-A043D02
CAS No:NA
Mol.F.: C22H20D4ClN3O : HCl
Mol.Wt.: 385.9 : 36.5
Inv. Status: Custom Synthesis

Possible Nitroso Standards

N-Nitroso Desmethyl Azelastine

Picture of N-Nitroso Desmethyl Azelastine
CAT No: SZ-A043024
CAS No: NA
Mol.F. : C21H21ClN4O2
Mol.Wt. : 396.9
Inv. Status: In Stock
SZ-A043024
CAS No:NA
Mol.F.: C21H21ClN4O2
Mol.Wt.: 396.9
Inv. Status: In Stock

N-Nitroso Azelastine EP Impurity A

Picture of N-Nitroso Azelastine EP Impurity A
CAT No: SZ-A043026
CAS No: NA
Mol.F. : C7H7N3O2
Mol.Wt. : 165.2
Inv. Status: Custom Synthesis
SZ-A043026
CAS No:NA
Mol.F.: C7H7N3O2
Mol.Wt.: 165.2
Inv. Status: Custom Synthesis

N-Nitroso Azelastine EP Impurity B

Picture of N-Nitroso Azelastine EP Impurity B
CAT No: SZ-A043027
CAS No: NA
Mol.F. : C14H20N4O2
Mol.Wt. : 276.3
Inv. Status: In Stock
SZ-A043027
CAS No:NA
Mol.F.: C14H20N4O2
Mol.Wt.: 276.3
Inv. Status: In Stock