QCS reference standards
Reference standards published in the QCS catalogue, listed with CAS number, molecular formula, molecular weight and structure where available.
38,635 products · 644 pages
QCS products
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Anorethidrane Impurity 1
CUSTOM SYNTHESISRS-A1029001 -
Ascomycin Impurity 1
BACK ORDERRS-A1030001 -
7-Anca Impurity B
CUSTOM SYNTHESISRS-A1031001 -
Amphetamine Sulfate Impurity 2
CUSTOM SYNTHESISRS-A1032001 -
Afloqualone Nitro Impurity
IN STOCKRS-A1033001 -
Ancitabine Impurity 5
IN STOCKRS-A1034001 -
Anecortave Impurity 2
BACK ORDERRS-A1035001 -
Aspartate Ornithine Impurity A
IN STOCKRS-A1036001 -
Aspartate Impurity 4
IN STOCKRS-A1037001 -
Arformoterol Tartrate Impurity 4
CUSTOM SYNTHESISRS-A1038001 -
Azure A Impurity 3
CUSTOM SYNTHESISRS-A1039001 -
Aloin Impurity 2
BACK ORDERRS-A1040001 -
Acedapsone Impurity 2
IN STOCKRS-A1041001 -
Amygdalin Impurity 1
CUSTOM SYNTHESISRS-A1042001 -
Antofloxacin Impurity 1
IN STOCKRS-A1043001 -
Antofloxacin Dimer Impurity 7
BACK ORDERRS-A1044001 -
Azlocillinum Impurity 1
BACK ORDERRS-A1045001 -
Anhydroicaritin Impurity 5
CUSTOM SYNTHESISRS-A1046001 -
Acephate Impurity 1
CUSTOM SYNTHESISRS-A1047001 -
7-Acca Impurity 1
IN STOCKRS-A1048001 -
all-rac-α-Tocopheryl acetate EP Impurity A
CUSTOM SYNTHESISRS-A1049001 -
Anisodamine Impurity 60
CUSTOM SYNTHESISRS-A398001 -
Apatinib Mesylate Impurity 10
BACK ORDERRS-A448001 -
4-Aminophenol-d7
IN STOCKRS-A504001 -
Adavosertib
CUSTOM SYNTHESISRS-A506001 -
Aesculuside B
BACK ORDERRS-A510001 -
Asivatrep (controlled substance)
CUSTOM SYNTHESISRS-A516001 -
Azintamide Impurity 1
IN STOCKRS-A519001 -
Abeprazan Impurity 2
BACK ORDERRS-A608001 -
Alfaxalone Impurity 2
IN STOCKRS-A621001 -
Andamertinib Impurity 183
IN STOCKRS-A633001 -
All-Rac-Alpha-Tocopherol EP Impurity A (all-rac-α-Toco
BACK ORDERRS-A693001 -
Beraprost Impurity 41
BACK ORDERRS-B286001 -
Beclometasone Dipropionate Impurity 30
BACK ORDERRS-B314001 -
3-Bromopyridine-d4
IN STOCKRS-B342001 -
Bergaptol
IN STOCKRS-B347001 -
Bicyclomycin
IN STOCKRS-B350001 -
1,4-Butanediol-1,1,2,2,3,3,4,4-d8
IN STOCKRS-B354001 -
Bis Thf Hns Derivative Impurity 5
IN STOCKRS-B487001 -
Benfotiamine Amide
BACK ORDERRS-B689001 -
BETd 246 Impurity 1
BACK ORDERRS-B690001 -
Bgm0504 Impurity 2
BACK ORDERRS-B691001 -
Betadex EP Impurity A
BACK ORDERRS-B692001 -
Benzylpenicillin (Benzathine) Tetrahydrate EP Impurity
BACK ORDERRS-B693001 -
Bulleyaconitine A Impurity 1
BACK ORDERRS-B694001 -
Borofalan (10B) Impurity 3
IN STOCKRS-B695001 -
Benepenem Impurity 2
BACK ORDERRS-B696001 -
Benzylisoquinoline Impurity 1
IN STOCKRS-B697001 -
Bemegride Impurity 1
IN STOCKRS-B698001 -
Berbamine Impurity 1
IN STOCKRS-B699001 -
Bexgliflozin Impurity 3
CUSTOM SYNTHESISRS-B700001 -
Ubidecarenone (Coenzyme Q10) Impurity 42
CUSTOM SYNTHESISRS-U130001 -
Unithiol
IN STOCKRS-U146001 -
Umeclidiniu Impurity B
IN STOCKRS-U182001 -
Candesartan Methyl Ester Desethyl Analog
BACK ORDERRS-C1126001 -
Citronellol Impurity 1
BACK ORDERRS-C1127001 -
Cromoglicate Impurity 37
BACK ORDERRS-C1128001 -
Cyclosporin B Impurity 47
BACK ORDERRS-C1129001 -
Candesartan N1-Ethyl Impurity
BACK ORDERRS-C1130001 -
Creatint Phosphate Sodium Impurity 1
IN STOCKRS-C1131001
38,635 products · 644 pages