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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2-Bromo-2-Methylpropanenitrile
CUSTOM SYNTHESISRS-U211N10 -
Mezlocillin Impurity 4
IN STOCKRS-U211N12 -
Mezlocillin Impurity 6
IN STOCKRS-U211N16 -
Dyclonine Impurity 9
CUSTOM SYNTHESISRS-U211N1N -
2-Butyl-1,2-Benzisothiazolin-3-One
IN STOCKRS-U211N1Y -
2-(Trifluoromethyl)Benzaldehyde
IN STOCKRS-U211N2T -
2-Methylhexanoic Acid
IN STOCKRS-U211N34 -
Piscidic Acid
IN STOCKRS-U211N3M -
MK-0752
BACK ORDERRS-U211N3R -
Berbamine
BACK ORDERRS-U211N42 -
1-(2,4,6-Trihydroxyphenyl)Ethan-1-One
IN STOCKRS-U211N46 -
Jacoline
IN STOCKRS-U211N47 -
2-(2-Aminoethyl)Aniline
IN STOCKRS-U211N4A -
Indoxyl Sulfate
CUSTOM SYNTHESISRS-U211N4J -
3,3',5,5'-Tetramethyldiphenoquinone
IN STOCKRS-U211N4O -
Isogentisin
IN STOCKRS-U211N4R -
N,N'-(Ethane-1,2-Diyl)Diformamide
IN STOCKRS-U211N4W -
Aconitic Acid
IN STOCKRS-U211N53 -
4-((4-Hydroxyphenyl)Imino)Cyclohexa-2,5-Dienone
IN STOCKRS-U211N58 -
Cycloheptanone
IN STOCKRS-U211N5C -
Ethyl 5-Methylisoxazole-4-Carboxylate
IN STOCKRS-U211N61 -
2-Methylbut-2-Ene
IN STOCKRS-U211N62 -
Methyl Naphthalene-2-Sulfonate
IN STOCKRS-U211N66 -
2-(4-Chlorophenyl)Butanoyl Chloride
IN STOCKRS-U211N6H -
2-Methyl-5-Nitropyridin-3-Amine
CUSTOM SYNTHESISRS-U211N6R -
(Z)-Methyl(Prop-1-En-1-Yl)Sulfane
CUSTOM SYNTHESISRS-U211N6V -
M-Iodohippuric Acid
CUSTOM SYNTHESISRS-U211N73 -
Methyl (9E,12E,15Z)-Octatrienoate
CUSTOM SYNTHESISRS-U211N7K -
Caulophyllogenin
BACK ORDERRS-U211N7N -
7,7-Dichlorobicyclo[3.2.0]Hept-2-En-6-One
CUSTOM SYNTHESISRS-U211N7T -
N-(2-Chlorophenyl)Acetamide
CUSTOM SYNTHESISRS-U211N7Z -
Venetoclax Impurity 124
IN STOCKRS-U211N82 -
4-Hydroxy-4-Methylpyrrolidin-2-One
IN STOCKRS-U211N88 -
Evernic Acid
IN STOCKRS-U211N8A -
3-Bromo-2-Methylpropanenitrile
IN STOCKRS-U211N8B -
1-(3,5-Dimethylphenyl)Ethanone
CUSTOM SYNTHESISRS-U211N8G -
Ensifentrine Impurity 14
IN STOCKRS-U211N8L -
Regadenoson Impurity 32
IN STOCKRS-U211N8N -
Senecioic Acid
IN STOCKRS-U211N8O -
1,10-Phenanthroline-5,6-Diol
IN STOCKRS-U211N8T -
2-(1-Hydroxyethylidene)Malononitrile
IN STOCKRS-U211N9H -
Glycylmethionine
IN STOCKRS-U211N9P -
Methyl 2-(1H-Tetrazol-1-Yl)Acetate
IN STOCKRS-U211N9V -
Methyl 3-Hydroxytetradecanoate
IN STOCKRS-U211N9X -
3,17-Dioxo-4-Androsten-11Alpha-Yl Hydrogen Succinate
BACK ORDERRS-U211NAB -
3-Methylbut-1-Ene
IN STOCKRS-U211NAG -
Amorolfine Impurity 38
IN STOCKRS-U211NAH -
11α-Hydroxyandrostenedione
IN STOCKRS-U211NAJ -
2-Bromo-3-Methylbutanoic Acid
IN STOCKRS-U211NAK -
Hydroxyprogesterone Impurity 10
IN STOCKRS-U211NAN -
2-Ethyl-3-Methylpyridine
CUSTOM SYNTHESISRS-U211NAU -
6-Acetamidohexanoic Acid
IN STOCKRS-U211NAV -
5-Ethyl-6-Methylhept-3-En-2-One
CUSTOM SYNTHESISRS-U211NAZ -
Potassium Hydrogen Glucarate
CUSTOM SYNTHESISRS-U211NB7 -
2-Chloroquinolin-6-Ol
IN STOCKRS-U211NBC -
Methyl 2-Acetoxy-2-Methylpropanoate
CUSTOM SYNTHESISRS-U211NBG -
1-(5-Chlorothiophen-3-Yl)Ethanone
IN STOCKRS-U211NBK -
Diacetone-D-Glucose
IN STOCKRS-U211NBM -
4-Methylpiperazine-1-Carboxylic Acid
IN STOCKRS-U211NBN -
1-Benzyl-2-Nitrobenzene
IN STOCKRS-U211NBQ
38,635 products · 644 pages





























![Chemical structure of 7,7-Dichlorobicyclo[3.2.0]Hept-2-En-6-One](/structures/w4/JBPBARAOHIDZPU-UHFFFAOYSA-N.webp?v=9)





























