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Pharmaceutical Reference Standards

Theophylline

Picture of Theophylline
CAT No: SZ-T045001
CAS No: 58-55-9
Mol.F. : C7H8N4O2
Mol.Wt. : 180.2
Inv. Status: In Stock
SZ-T045001
CAS No:58-55-9
Mol.F.: C7H8N4O2 
Mol.Wt.: 180.2
Inv. Status: In Stock

Etofyllin

Picture of Etofyllin
CAT No: SZ-T045002
CAS No: 519-37-9
Mol.F. : C9H12N4O3
Mol.Wt. : 224.2
Inv. Status: In Stock
SZ-T045002
CAS No:519-37-9
Mol.F.: C9H12N4O3
Mol.Wt.: 224.2
Inv. Status: In Stock

Theophylline EP Impurity B

Picture of Theophylline EP Impurity B
CAT No: SZ-T045004
CAS No: 1076-22-8
Mol.F. : C6H6N4O2
Mol.Wt. : 166.1
Inv. Status: In Stock
SZ-T045004
CAS No:1076-22-8
Mol.F.: C6H6N4O2 
Mol.Wt.: 166.1
Inv. Status: In Stock

Theophylline EP Impurity C

Picture of Theophylline EP Impurity C
CAT No: SZ-T045005
CAS No: 7597-60-6
Mol.F. : C7H10N4O3
Mol.Wt. : 198.2
Inv. Status: In Stock
SZ-T045005
CAS No:7597-60-6
Mol.F.: C7H10N4O3
Mol.Wt.: 198.2
Inv. Status: In Stock

Theophylline EP Impurity D

Picture of Theophylline EP Impurity D
CAT No: SZ-T045006
CAS No: 6736-40-9
Mol.F. : C6H10N4O
Mol.Wt. : 154.2
Inv. Status: Custom Synthesis
SZ-T045006
CAS No:6736-40-9
Mol.F.: C6H10N4O
Mol.Wt.: 154.2
Inv. Status: Custom Synthesis

Theophylline EP Impurity E

Picture of Theophylline EP Impurity E
CAT No: SZ-T045007
CAS No: 944-73-0
Mol.F. : C7H8N4O3
Mol.Wt. : 196.2
Inv. Status: In Stock
SZ-T045007
CAS No:944-73-0
Mol.F.: C7H8N4O3 
Mol.Wt.: 196.2
Inv. Status: In Stock

Theophylline 7-Acetic Acid

Picture of Theophylline 7-Acetic Acid
CAT No: SZ-T045008
CAS No: 652-37-9
Mol.F. : C9H10N4O4
Mol.Wt. : 238.2
Inv. Status: In Stock
SZ-T045008
CAS No:652-37-9
Mol.F.: C9H10N4O4 
Mol.Wt.: 238.2
Inv. Status: In Stock

8-Chlorotheophylline

Picture of 8-Chlorotheophylline
CAT No: SZ-T045009
CAS No: 85-18-7
Mol.F. : C7H7ClN4O2
Mol.Wt. : 214.6
Inv. Status: In Stock
SZ-T045009
CAS No:85-18-7
Mol.F.: C7H7ClN4O2 
Mol.Wt.: 214.6
Inv. Status: In Stock

8-Benzyl Theophylline

Picture of 8-Benzyl Theophylline
CAT No: SZ-T045010
CAS No: 2879-15-4
Mol.F. : C14H14N4O2
Mol.Wt. : 270.3
Inv. Status: Custom Synthesis
SZ-T045010
CAS No:2879-15-4
Mol.F.: C14H14N4O2 
Mol.Wt.: 270.3
Inv. Status: Custom Synthesis

Theophylline-7-Acetaldehyde

Picture of Theophylline-7-Acetaldehyde
CAT No: SZ-T045011
CAS No: 5614-53-9
Mol.F. : C9H10N4O3
Mol.Wt. : 222.2
Inv. Status: Custom Synthesis
SZ-T045011
CAS No:5614-53-9
Mol.F.: C9H10N4O3
Mol.Wt.: 222.2
Inv. Status: Custom Synthesis

Theophylline Impurity 4

Picture of Theophylline Impurity 4
CAT No: SZ-T045012
CAS No: 1174289-18-9
Mol.F. : C11H14N4O4
Mol.Wt. : 266.3
Inv. Status: Custom Synthesis
SZ-T045012
CAS No:1174289-18-9
Mol.F.: C11H14N4O4 
Mol.Wt.: 266.3
Inv. Status: Custom Synthesis

Theophylline Impurity 6

Picture of Theophylline Impurity 6
CAT No: SZ-T045013
CAS No: 81781-90-0
Mol.F. : C16H17ClN4O2
Mol.Wt. : 332.8
Inv. Status: Custom Synthesis
SZ-T045013
CAS No:81781-90-0
Mol.F.: C16H17ClN4O2 
Mol.Wt.: 332.8
Inv. Status: Custom Synthesis

Theophylline Impurity 7

Picture of Theophylline Impurity 7
CAT No: SZ-T045014
CAS No: 60797-68-4
Mol.F. : C7H10N4O3
Mol.Wt. : 198.2
Inv. Status: Custom Synthesis
SZ-T045014
CAS No:60797-68-4
Mol.F.: C7H10N4O3 
Mol.Wt.: 198.2
Inv. Status: Custom Synthesis

Theophylline Impurity 8

Picture of Theophylline Impurity 8
CAT No: SZ-T045015
CAS No: 5309-70-6
Mol.F. : C4H5BrO2
Mol.Wt. : 165.0
Inv. Status: Custom Synthesis
SZ-T045015
CAS No:5309-70-6
Mol.F.: C4H5BrO2 
Mol.Wt.: 165.0
Inv. Status: Custom Synthesis

Theophylline Impurity 9

Picture of Theophylline Impurity 9
CAT No: SZ-T045016
CAS No: 42772-85-0
Mol.F. : C9H12O4S
Mol.Wt. : 216.3
Inv. Status: Custom Synthesis
SZ-T045016
CAS No:42772-85-0
Mol.F.: C9H12O4S 
Mol.Wt.: 216.3
Inv. Status: Custom Synthesis

1-Bromoethyl Acetate

Picture of 1-Bromoethyl Acetate
CAT No: SZ-T045017
CAS No: 40258-78-4
Mol.F. : C4H7BrO2
Mol.Wt. : 167.0
Inv. Status: Out of Stock, Custom Synthesis
SZ-T045017
CAS No:40258-78-4
Mol.F.: C4H7BrO2 
Mol.Wt.: 167.0
Inv. Status: Out of Stock, Custom Synthesis

1,2-Dibromoethyl Acetate

Picture of 1,2-Dibromoethyl Acetate
CAT No: SZ-T045018
CAS No: 24442-57-7
Mol.F. : C4H6Br2O2
Mol.Wt. : 245.9
Inv. Status: Custom Synthesis
SZ-T045018
CAS No:24442-57-7
Mol.F.: C4H6Br2O2 
Mol.Wt.: 245.9
Inv. Status: Custom Synthesis

Theophylline Impurity 12

Picture of Theophylline Impurity 12
CAT No: SZ-T045019
CAS No: NA
Mol.F. : C11H12N4O4
Mol.Wt. : 264.2
Inv. Status: Custom Synthesis
SZ-T045019
CAS No:NA
Mol.F.: C11H12N4O4 
Mol.Wt.: 264.2
Inv. Status: Custom Synthesis

Theophylline Impurity 13

Picture of Theophylline Impurity 13
CAT No: SZ-T045020
CAS No: 427895-68-9
Mol.F. : C7H10N4O2
Mol.Wt. : 182.2
Inv. Status: Custom Synthesis
SZ-T045020
CAS No:427895-68-9
Mol.F.: C7H10N4O2 
Mol.Wt.: 182.2
Inv. Status: Custom Synthesis

Theophylline EP Impurity D (HCl salt)

Picture of Theophylline EP Impurity D (HCl salt)
CAT No: SZ-T045021
CAS No: 116131-08-9
Mol.F. : C6H10N4O : HCl
Mol.Wt. : 154.2 : 36.5
Inv. Status: In Stock
Rel. CAS No : 6736-40-9 (free base)
SZ-T045021
CAS No:116131-08-9
Mol.F.: C6H10N4O : HCl
Mol.Wt.: 154.2 : 36.5
Inv. Status: In Stock
Rel. CAS No : 6736-40-9 (free base)

Theophylline Hydrochloride Monohydrate

Picture of Theophylline Hydrochloride Monohydrate
CAT No: SZ-T045026
CAS No: 1604876-32-5
Mol.F. : C7H8N4O2 : HCl : H2O
Mol.Wt. : 180.2 : 36.5 : 18.0
Inv. Status: Custom Synthesis
Rel. CAS No : 58-55-9 (free base) ; 3485-82-3 (Na salt) ; 5967-84-0 (hydrate salt) ; 57533-87-6 (K salt) ; 37611-63-5 (HCl salt)
SZ-T045026
CAS No:1604876-32-5
Mol.F.: C7H8N4O2 : HCl : H2O
Mol.Wt.: 180.2 : 36.5 : 18.0
Inv. Status: Custom Synthesis
Rel. CAS No : 58-55-9 (free base) ; 3485-82-3 (Na salt) ; 5967-84-0 (hydrate salt) ; 57533-87-6 (K salt) ; 37611-63-5 (HCl salt)

7-Methylxanthin

Picture of 7-Methylxanthin
CAT No: SZ-T045027
CAS No: 552-62-5
Mol.F. : C6H6N4O2
Mol.Wt. : 166.1
Inv. Status: In Stock
SZ-T045027
CAS No:552-62-5
Mol.F.: C6H6N4O2
Mol.Wt.: 166.1
Inv. Status: In Stock

Theophylline Impurity 17

Picture of Theophylline Impurity 17
CAT No: SZ-T045028
CAS No: NA
Mol.F. : C9H10N4O3 : C9H12N4O4
Mol.Wt. : 222.2 : 240.2
Inv. Status: In Stock
SZ-T045028
CAS No:NA
Mol.F.: C9H10N4O3 : C9H12N4O4
Mol.Wt.: 222.2 : 240.2
Inv. Status: In Stock

Theophylline Impurity 18

Picture of Theophylline Impurity 18
CAT No: SZ-T045030
CAS No: 39726-70-0
Mol.F. : C17H20N8O5
Mol.Wt. : 416.4
Inv. Status: Custom Synthesis
SZ-T045030
CAS No:39726-70-0
Mol.F.: C17H20N8O5
Mol.Wt.: 416.4
Inv. Status: Custom Synthesis

Stable Isotopes and Metabolites

Theophylline D6

Picture of Theophylline D6
CAT No: SZ-T045D01
CAS No: 117490-39-8
Mol.F. : C7H2D6N4O2
Mol.Wt. : 186.2
Inv. Status: Custom Synthesis
SZ-T045D01
CAS No:117490-39-8
Mol.F.: C7H2D6N4O2
Mol.Wt.: 186.2
Inv. Status: Custom Synthesis

8-Chlorotheophylline-D6

Picture of 8-Chlorotheophylline-D6
CAT No: SZ-T045D02
CAS No: 1346598-95-5
Mol.F. : C7HD6ClN4O2
Mol.Wt. : 220.6
Inv. Status: Custom Synthesis
SZ-T045D02
CAS No:1346598-95-5
Mol.F.: C7HD6ClN4O2
Mol.Wt.: 220.6
Inv. Status: Custom Synthesis

Possible Nitroso Standards

N-Nitroso Theophylline

Picture of N-Nitroso Theophylline
CAT No: SZ-T045022
CAS No: NA
Mol.F. : C7H7N5O3
Mol.Wt. : 209.2
Inv. Status: Custom Synthesis
SZ-T045022
CAS No:NA
Mol.F.: C7H7N5O3
Mol.Wt.: 209.2
Inv. Status: Custom Synthesis

N-Nitroso Theophylline EP Impurity D

Picture of N-Nitroso Theophylline EP Impurity D
CAT No: SZ-T045023
CAS No: NA
Mol.F. : C6H9N5O2
Mol.Wt. : 183.2
Inv. Status: Custom Synthesis
SZ-T045023
CAS No:NA
Mol.F.: C6H9N5O2
Mol.Wt.: 183.2
Inv. Status: Custom Synthesis

N-Nitroso Theophylline EP Impurity C

Picture of N-Nitroso Theophylline EP Impurity C
CAT No: SZ-T045024
CAS No: NA
Mol.F. : C7H9N5O4
Mol.Wt. : 227.2
Inv. Status: Custom Synthesis
SZ-T045024
CAS No:NA
Mol.F.: C7H9N5O4
Mol.Wt.: 227.2
Inv. Status: Custom Synthesis

N-Nitroso-8-Chlorotheophylline

Picture of N-Nitroso-8-Chlorotheophylline
CAT No: SZ-T045029
CAS No: NA
Mol.F. : C7H6ClN5O3
Mol.Wt. : 243.6
Inv. Status: Custom Synthesis
SZ-T045029
CAS No:NA
Mol.F.: C7H6ClN5O3
Mol.Wt.: 243.6
Inv. Status: Custom Synthesis