Acetylsalicylic-Acid-Impurities | Pharmaffiliates

acetylsalicylic acid and its Impurities

Acetyl Salicyclic acid (ASA) is an acetyl derivative of salicylic acid and its common name is Aspirin. It is used in the treatment of pain, fever, and inflammation. Aspirin or acetylsalicylic acid is perhaps the most commonly used analgesic and antipyretic medication worldwide. Reference standards of Acetylsalicylic Acid API, and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.

Displaying 26 results for acetylsalicylic acid Impurities
PA 01 18000

Acetylsalicylic Acid - API Standards

Acetylsalicylic Acid


  • Catalogue No.:PA 01 18000

  • CAS :

    50-78-2

  • Molecular Formula : C9H8O4

  • Molecular Weight :  180.16

PA 01 18010

Acetylsalicylic Acid - Impurity A

p-Salicylic Acid


  • Catalogue No.:PA 01 18010

  • CAS :

    99-96-7

  • Molecular Formula : C7H6O3

  • Molecular Weight : 138.12

PA 01 18020

Acetylsalicylic Acid - Impurity B

4-Hydroxyisophthalic Acid


  • Catalogue No.:PA 01 18020

  • CAS :

    636-46-4

  • Molecular Formula : C8H6O5

  • Molecular Weight : 182.13

PA 01 18030

Acetylsalicylic Acid - Impurity C

Salicylic Acid


  • Catalogue No.:PA 01 18030

  • CAS :

    69-72-7

  • Molecular Formula : C7H6O3

  • Molecular Weight : 138.12

PA 01 18040

Acetylsalicylic Acid - Impurity D

Acetylsalicylsalicylic Acid


  • Catalogue No.:PA 01 18040

  • CAS :

    530-75-6

  • Molecular Formula : C16H12O6

  • Molecular Weight : 300.26

PA 01 18050

Acetylsalicylic Acid - Impurity E

Salicylsalicylic Acid


  • Catalogue No.:PA 01 18050

  • CAS :

    552-94-3

  • Molecular Formula : C14H10O5

  • Molecular Weight : 258.23

PA 01 18060

Acetylsalicylic Acid - Impurity F

Acetylsalicylic Anhydride


  • Catalogue No.:PA 01 18060

  • CAS :

    1466-82-6

  • Molecular Formula : C18H14O7

  • Molecular Weight :   342.3

PA 01 18510

Tri-Salicylic Acid

Tri-Salicylic Acid


  • Catalogue No.:PA 01 18510

  • CAS :

    85531-17-5

  • Molecular Formula : C21H14O7

  • Molecular Weight : 378.33

PA EPA0200000

Acetylsalicylic acid (A0200000)

Acetylsalicylic acid (A0200000)


  • Catalogue No.:PA EPA0200000

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

PA EPY0001460

Acetylsalicylic acid for peak identification (Y0001460)

Acetylsalicylic acid for peak identification (Y0001460)


  • Catalogue No.:PA EPY0001460

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

PA 01 18520

Mixture of Acetylsalicylic Acid Impurity A, Impurity B, Impurity D, Impurity E and Impurity F

Mixture of Acetylsalicylic Acid Impurity A, Impurity B, Impurity D, Impurity E and Impurity F


  • Catalogue No.:PA 01 18520

  • CAS :

    NA

  • Molecular Formula : C7H6O3 + C8H6O5 + C16H12O6 + C14H10O5 + C18H14O7

  • Molecular Weight : 138.12

PA 01 18530

2-[[2-(Acetyloxy)benzoyl]oxy]benzoic Acid 2-Carboxyphenyl Ester

2-[[2-(Acetyloxy)benzoyl]oxy]benzoic Acid 2-Carboxyphenyl Ester


  • Catalogue No.:PA 01 18530

  • CAS :

    85531-16-4

  • Molecular Formula : C23H16O8

  • Molecular Weight : 420.37

PA 01 18540

2-[[2-(Acetyloxy)benzoyl]oxy]benzoic Acid 2-[(2-Carboxyphenoxy)carbonyl]phenyl Ester

2-[[2-(Acetyloxy)benzoyl]oxy]benzoic Acid 2-[(2-Carboxyphenoxy)carbonyl]phenyl Ester


  • Catalogue No.:PA 01 18540

  • CAS :

    85539-30-6

  • Molecular Formula : C30H20O10

  • Molecular Weight : 540.47

PA 01 18550

2-[[2-[[2-(Acetyloxy)benzoyl]oxy]benzoyl]oxy]benzoic Acid 2-[(2-Carboxyphenoxy)carbonyl]phenyl Ester

2-[[2-[[2-(Acetyloxy)benzoyl]oxy]benzoyl]oxy]benzoic Acid 2-[(2-Carboxyphenoxy)carbonyl]phenyl Ester


  • Catalogue No.:PA 01 18550

  • CAS :

    85531-19-7

  • Molecular Formula : C37H24O12

  • Molecular Weight : 660.58

PA 01 18560

2-[[2-[[2-(Acetyloxy)benzoyl]oxy]benzoyl]oxy]benzoic Acid 2-[[2-[(2-carboxyphenoxy)carbonyl]phenoxy]carbonyl]phenyl Ester

2-[[2-[[2-(Acetyloxy)benzoyl]oxy]benzoyl]oxy]benzoic Acid 2-[[2-[(2-carboxyphenoxy)carbonyl]phenoxy]carbonyl]phenyl Ester


  • Catalogue No.:PA 01 18560

  • CAS :

    85531-20-0

  • Molecular Formula : C44H28O14

  • Molecular Weight : 780.68

PA 27 0016403

Acetylsalicylic Acid - Impurity A (Potassium Salt)

4-Hydroxybenzoic Acid Potassium


  • Catalogue No.:PA 27 0016403

  • CAS :

    16782-08-4

  • Molecular Formula : C7H5KO3

  • Molecular Weight : 176.21

PA 01 0181000

Salicyl Sulfate Disodium Salt

Salicyl Sulfate Disodium Salt


  • Catalogue No.:PA 01 0181000

  • CAS :

    56343-01-2

  • Molecular Formula : C7H4Na2O6S

  • Molecular Weight : 262.14

PA 01 0181001

2-Acetoxybenzoic 2-hydroxybenzoic anhydride

2-Acetoxybenzoic 2-hydroxybenzoic anhydride


  • Catalogue No.:PA 01 0181001

  • CAS :

    2708578-72-5

  • Molecular Formula : C16H12O6

  • Molecular Weight : 300.27

PA 01 0181002

Acetic 2-acetoxybenzoic anhydride

Acetic 2-acetoxybenzoic anhydride


  • Catalogue No.:PA 01 0181002

  • CAS :

    18698-59-4

  • Molecular Formula : C11H10O5

  • Molecular Weight : 222.2

PA 01 0181003

5-Acetyl-2-hydroxybenzoic Acid Methyl Ester

5-Acetyl-2-hydroxybenzoic Acid Methyl Ester


  • Catalogue No.:PA 01 0181003

  • CAS :

    16475-90-4

  • Molecular Formula : C10H10O4

  • Molecular Weight : 194.19

PA 01 0181004

Acetylsalicylic acid acyl-d-glucuronide (aspirin acyl-d-glucuronide)

Acetylsalicylic acid acyl-d-glucuronide (aspirin acyl-d-glucuronide)


  • Catalogue No.:PA 01 0181004

  • CAS :

    24719-72-0

  • Molecular Formula : C15H16O10

  • Molecular Weight : 356.28

PA 27 0023498

Mono-Methyl Terephthalate

Mono-Methyl Terephthalate


  • Catalogue No.:PA 27 0023498

  • CAS :

    1679-64-7

  • Molecular Formula : C9H8O4

  • Molecular Weight : 180.16

PA 01 0181005

3-Acetyl-2-hydroxybenzoic Acid

3-Acetyl-2-hydroxybenzoic Acid


  • Catalogue No.:PA 01 0181005

  • CAS :

    67127-78-0

  • Molecular Formula : C9H8O4

  • Molecular Weight : 180.16

PA 01 0181006

5-Acetyl-2-hydroxybenzoic Acid

5-Acetyl-2-hydroxybenzoic Acid


  • Catalogue No.:PA 01 0181006

  • CAS :

    13110-96-8

  • Molecular Formula : C9H8O4

  • Molecular Weight : 180.16

PA 01 0181007

Adipoyl Disalicylate

Adipoyl Disalicylate


  • Catalogue No.:PA 01 0181007

  • CAS :

    69638-07-9

  • Molecular Formula : C20H18O8

  • Molecular Weight : 386.36

PA 01 0181008

2-((5-Carboxypentanoyl)oxy)benzoic Acid

2-((5-Carboxypentanoyl)oxy)benzoic Acid


  • Catalogue No.:PA 01 0181008

  • CAS :

    863985-44-8

  • Molecular Formula : C13H14O6

  • Molecular Weight : 266.25