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Theophylline Impurity 4
QCC Cat No.: QT081530
Chemical Name: Theophylline Impurity 4
Synonyms: 4H-pyrazolo[3,4-d]pyrimidin-4-amine
CAS No.: 20289-44-5
Molecular Formula: C5H5N5
Molecular Weight: 135.13
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Standard Reference Material For "Theophylline Impurity 4"
Warning:The form of the product salt may be different from the official website,please consult your local agent for details.
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QCC CAT# COMPOUND ORDER
  • QT081551
    Theophylline Impurity 51
    CAS# 31542-43-5
    M.F.: C8H10N4O3
    M.W.: 210.19
  • QT081550
    Theophylline Nitroso Impurity 7
    CAS# NA
    M.F.: C6H9N5O2
    M.W.: 183.17
  • QT081549
    Theophylline Nitroso Impurity 6
    CAS# NA
    M.F.: C7H9N5O4
    M.W.: 227.18
  • QT081548
    Theophylline Impurity 48
    CAS# 33120-34-2
    M.F.: C23H25N5O3
    M.W.: 419.49
  • QT081547
    Theophylline Nitroso Impurity 5
    CAS# NA
    M.F.: C4H12N4O
    M.W.: 132.17
  • QT081546
    Theophylline Nitroso Impurity 4
    CAS# NA
    M.F.: C6H9N5O2
    M.W.: 183.17
  • QT081545
    Theophylline Impurity 45
    CAS# 2879-15-4
    M.F.: C14H14N4O2
    M.W.: 270.29
  • QT081544
    Theophylline Impurity 44
    CAS# 81781-90-0
    M.F.: C16H17ClN4O2
    M.W.: 332.79
  • QT081543
    Theophylline Impurity 43
    CAS# 63125-83-7
    M.F.: C6H14ClNO2
    M.W.: 167.63
  • QT081542
    Theophylline Impurity 42
    CAS# NA
    M.F.: C17H20N8O5
    M.W.: 416.40
  • QT081541
    Theophylline-d6
    CAS# 117490-39-8
    M.F.: C7H2D6N4O2
    M.W.: 186.20
  • QT081540
    Theophylline Impurity 40
    CAS# NA
    M.F.: C9H16N4O3
    M.W.: 228.25
  • QT081539
    Theophylline Impurity 39
    CAS# NA
    M.F.: C10H14N4O4
    M.W.: 254.25
  • QT081538
    Theophylline Impurity 38
    CAS# NA
    M.F.: C17H22N8O5
    M.W.: 418.41
  • QT081537
    Theophylline Impurity 37
    CAS# NA
    M.F.: C20H28N8O7
    M.W.: 492.49
  • QT081536
    Theophylline Impurity 10
    CAS# 29214-62-8
    M.F.: C8H12O4
    M.W.: 172.18
  • QT081535
    Theophylline Nitroso Impurity 3
    CAS# NA
    M.F.: C7H7N5O3
    M.W.: 209.16
  • QT081534
    Theophylline Nitroso Impurity 2
    CAS# NA
    M.F.: C7H7N5O3
    M.W.: 209.16
  • QT081533
    Theophylline Nitroso Impurity 1
    CAS# NA
    M.F.: C6H8N4O3
    M.W.: 184.15
  • QT081532
    Theophylline Impurity 6
    CAS# NA
    M.F.: C5H7N3O2
    M.W.: 141.13
  • QT081531
    Theophylline Impurity 5
    CAS# NA
    M.F.: C7H10N4O3
    M.W.: 198.18
  • QT081529
    Theophylline Impurity 3
    CAS# 6642-31-5
    M.F.: C6H9N3O2
    M.W.: 155.15
  • QT081528
    Theophylline Impurity 2
    CAS# 6136-37-4
    M.F.: C6H6N4O2
    M.W.: 166.14
  • QT081527
    Theophylline Impurity 1
    CAS# 5614-53-9 (aldehyde form)
    M.F.: C9H10N4O3.C9H12N4O4
    M.W.: 222.20 240.22
  • QT081506
    Theophylline EP Impurity F;
    Diprophylline EP Impurity C;Etofylline
    CAS# 519-37-9
    M.F.: C9H12N4O3
    M.W.: 224.22
  • QT081505
    Theophylline EP Impurity E
    CAS# 944-73-0
    M.F.:  C7H8N4O3
    M.W.: 196.16
  • QT081504
    Theophylline EP Impurity D HCl;
    Diprophylline EP Impurity A;Theophyllidine
    CAS# 116131-08-9;6736-40-9 (free base)
    M.F.: C6H10N4O.HCl
    M.W.: 154.17 36.46
  • QT081503
    Theophylline EP Impurity C;Caffeine EP Impurity B
    CAS# 7597-60-6
    M.F.: C7H10N4O3
    M.W.: 198.18
  • QT081502
    Theophylline EP Impurity B;
    Pentoxifylline EP Impurity B
    CAS# 1076-22-8
    M.F.: C6H6N4O2
    M.W.: 166.14
  • QA021601
    Theophylline-7-acetic Acid
    CAS# 652-37-9
    M.F.: C9H10N4O4
    M.W.: 238.2
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