Building Blocks
1637 Results Found
Page 31 of 50
Building Blocks (Aliphatic/Aromatic/Heterocyclic/Carbohydrates)
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Product Name : 5-(Phenyl-Hydrazono)-pentane-1,2,3,4-Tetrol ;(2R,3S,4R,E)-5-(2-phenylhydrazono)pentane-1,2,3,4-tetraol; D-Arabinose Phenylhydrazone ; |28767-74-0
Code: JC-BB683 CAS: 28767-74-0 Chemical Formula: C11H16N2O4 Molecular Weight: 240.26 Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities Literature: Application: 5-(Phenyl-Hydrazono)-pentane-1,2,3,4-Tetrol ;(2R,3S,4R,E)-5-(2-phenylhydrazono)pentane-1,2,3,4-tetraol; D-Arabinose Phenylhydrazone ; |28767-74-0 is useful as reference Impurity standard. 
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Product Name : 5-Deoxy 2, 3-isopropylidene-L-ribose.; |124928-70-7
Code: JC-BB682 CAS: 124928-70-7 Chemical Formula: Molecular Weight: Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities Literature: Application: 5-Deoxy 2, 3-isopropylidene-L-ribose.; |124928-70-7 is useful as reference Impurity standard. 
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Product Name : 6-Deoxy 3,4-isopropylidene-L-allitol. ;(R)-1-((4R,5S)-5-((S)-1-hydroxyethyl)-2,2-dimethyl-1,3-dioxolan-4-yl)ethane-1,2-diol |105617-51-4
Code: JC-BB681 CAS: 105617-51-4 Chemical Formula: C9H18O5 Molecular Weight: 206.20 Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities Literature: Application: 6-Deoxy 3,4-isopropylidene-L-allitol. ;(R)-1-((4R,5S)-5-((S)-1-hydroxyethyl)-2,2-dimethyl-1,3-dioxolan-4-yl)ethane-1,2-diol |105617-51-4 is useful as reference Impurity standard.
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Product Name : 2, 3-isopropylidene-D-ribose. ;(4R,5R)-5-((R)-1,2-Dihydroxyethyl)-2,2-dimethyl-1,3-dioxolane-4-carbaldehyde, |13199-25-2
Code: JC-BB680 CAS: 13199-25-2 Chemical Formula: C8H14O5 Molecular Weight: 190.19 Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities Literature: Application: 2, 3-isopropylidene-D-ribose. ;(4R,5R)-5-((R)-1,2-Dihydroxyethyl)-2,2-dimethyl-1,3-dioxolane-4-carbaldehyde, |13199-25-2 is useful as reference Impurity standard. 
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Product Name : 1-Bromoethyl Acetate ;(RS)-1-Acetoxyethyl Bromide; 1-Acetoxyethyl Bromide; α-Bromoethyl Acetate; Theophylline |40258-78-4″
Code: JC-BB679 CAS: 40258-78-4 Chemical Formula: Molecular Weight: Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities Literature: Application: 1-Bromoethyl Acetate ;(RS)-1-Acetoxyethyl Bromide; 1-Acetoxyethyl Bromide; α-Bromoethyl Acetate; Theophylline |40258-78-4"is useful as reference Impurity standard. 
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Product Name : 5-(BROMOMETHYL)-4,6-DICHLORO-2-METHYLPYRIMIDINE ; 5-(BroMoMethyl)-4,6-dichloro-2-MethylpyriMidine | 1780-34-3
Code: JC-BB678 CAS: 1780-34-3 Chemical Formula: C6H5BrCl2N2 Molecular Weight: 255.93 Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities Literature: Application: 5-(BROMOMETHYL)-4,6-DICHLORO-2-METHYLPYRIMIDINE ; 5-(BroMoMethyl)-4,6-dichloro-2-MethylpyriMidine | 1780-34-3is useful as reference Impurity standard. 
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Product Name : 5-(BROMOMETHYL)-4,6-DICHLOROPYRIMIDINE ; 5-(Bromomethyl)-4,6-dichloropyrimidine | 1260654-13-4
Code: JC-BB677 CAS: 1260654-13-4 Chemical Formula: C₅H₃N₂Cl₂Br Molecular Weight: 241.90 Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities Literature: Application: 5-(BROMOMETHYL)-4,6-DICHLOROPYRIMIDINE ; 5-(Bromomethyl)-4,6-dichloropyrimidine | 1260654-13-4is useful as reference Impurity standard. 
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Product Name : (R)-2-Amino-3-(thiophen-2-yl)propanoic acid; 3-(2-Thienyl)-D-alanine ; D-2-Thienylalanine | 62561-76-6
Code: JC-BB676 CAS: 62561-76-6 Chemical Formula: C7H9NO2S Molecular Weight: 171.22 Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities Literature: Application: (R)-2-Amino-3-(thiophen-2-yl)propanoic acid; 3-(2-Thienyl)-D-alanine ; D-2-Thienylalanine | 62561-76-6is useful as reference Impurity standard. 
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Product Name : 5-Hydroxyquinolin-2(1H)-one ; 5-Hydroxy-2(1H)-quinolone; 5-Hydroxycarbostyril; 5-Hydroxyquinolin-2(1H)-one; 31570-97-5
Code: JC-BB675 CAS: 31570-97-5 Chemical Formula: C9H7NO2 Molecular Weight: 161.16 Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities Literature: Application: 5-Hydroxyquinolin-2(1H)-one ; 5-Hydroxy-2(1H)-quinolone; 5-Hydroxycarbostyril; 5-Hydroxyquinolin-2(1H)-one; 31570-97-5 is useful as reference Impurity standard. 
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Product Name : ALPHA GLYCERYL PHOSPHORYLCHOLINE RS ; sn-Glycero-3-phosphocholine| 28319-77-9
Code: JC-BB674 CAS: 28319-77-9 Chemical Formula: C₈H₂₀NO₆P Molecular Weight: 257.22 Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities Literature: Application: ALPHA GLYCERYL PHOSPHORYLCHOLINE RS ; sn-Glycero-3-phosphocholine| 28319-77-9is useful as reference Impurity standard. 
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Product Name : Benzaldehyde ; Bitter almond, Benzaldehyde | 100-52-7
Code: JC-BB673 CAS: 100-52-7 Chemical Formula: C6H5CHO Molecular Weight: 106.12 Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities Literature: Application: Benzaldehyde ; Bitter almond, Benzaldehyde | 100-52-7is useful as reference Impurity standard. 
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Product Name : 1-Chlorophthalazine(or)Hydralazine impurity A ; 1-Chloro-phthalazine | 5784-45-2
Code: JC-BB672 CAS: 5784-45-2 Chemical Formula: C₈H₅ClN₂ Molecular Weight: 164.59 Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities Literature: Application: 1-Chlorophthalazine(or)Hydralazine impurity A ; 1-Chloro-phthalazine | 5784-45-2is useful as reference Impurity standard. 
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Product Name : HYDRAZINE SULPHATE ;HS; Hydrazine Monosulfate; Hydrazinium Sulfate | 10034-93-2
Code: JC-BB671 CAS: 10034-93-2 Chemical Formula: H6N2O4S Molecular Weight: 130.12 Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities Literature: Application: HYDRAZINE SULPHATE ;HS; Hydrazine Monosulfate; Hydrazinium Sulfate | 10034-93-2is useful as reference Impurity standard. 
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Product Name : 1-Chloro ethyl phenyl carbonate (or) Phenyl 1-Chloro ethyl carbonate. ; 1-Chloroethyl Phenyl Carbonate; Phenyl 1-Chloroethyl Carbonate;
Code: JC-BB670 CAS: 50972-20-8 Chemical Formula: C9H9CIO3 Molecular Weight: 200.619 Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities Literature: Application: 1-Chloro ethyl phenyl carbonate (or) Phenyl 1-Chloro ethyl carbonate. ; 1-Chloroethyl Phenyl Carbonate; Phenyl 1-Chloroethyl Carbonate;is useful as reference Impurity standard. 
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Product Name : 2-(4-(Thien-2-yl)phenyl)thiophene ;2-(4-(Thien-2-yl)phenyl)thiophene | 23354-94-1
Code: JC-BB669 CAS: 23354-94-1 Chemical Formula: C14H10S2 Molecular Weight: 242.36 Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities Literature: Application: 2-(4-(Thien-2-yl)phenyl)thiophene ;2-(4-(Thien-2-yl)phenyl)thiophene | 23354-94-1is useful as reference Impurity standard. 
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Product Name : Butoxyethoxy ethanol ; 2-(2-Butoxyethoxy)ethanol | 112-34-5
Code: JC-BB668 CAS: 112-34-5 Chemical Formula: C8H18O3 Molecular Weight: 162.23 Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities Literature: Application: Butoxyethoxy ethanol ; 2-(2-Butoxyethoxy)ethanol | 112-34-5is useful as reference Impurity standard. 
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Product Name : 1,3-dichloropropyl)benzene ;1,3-Dichloro-1-phenylpropane |14155-36-3
Code: JC-BB667 CAS: 14155-36-3 Chemical Formula: C₉H₁₀Cl₂ Molecular Weight: 189.08 Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities Literature: Application: 1,3-dichloropropyl)benzene ;1,3-Dichloro-1-phenylpropane |14155-36-3is useful as reference Impurity standard. 
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Product Name : 2-Methyl-4,6-bis(octylsulfanylmethyl)phenol | 110553-27-0
Code: JC-BB666 CAS: 110553-27-0 Chemical Formula: C25H44OS2 Molecular Weight: 424.75 Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities Literature: Application: 2-Methyl-4,6-bis(octylsulfanylmethyl)phenol | 110553-27-0is useful as reference Impurity standard. 
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Product Name : Desfluoro Impurity: Benzo [c] [1,2] oxaborol-1 (3H)-ol (Desfluoro Impurity) ;5735-41-1
Code: JC-BB665 CAS: 5735-41-1 Chemical Formula: C7H7BO2 Molecular Weight: 133.94 Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities Literature: Application: Desfluoro Impurity: Benzo [c] [1,2] oxaborol-1 (3H)-ol (Desfluoro Impurity) ;5735-41-1is useful as reference Impurity standard. ![Desfluoro Impurity: Benzo [c] [1,2] oxaborol-1 (3H)-ol (Desfluoro Impurity) ;5735-41-1](https://drjcrbio.com/wp-content/uploads/5735-41-1.png)
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Product Name : Methyl Impurity: ; (4-fluoro-2-methylphenyl)boronic acid (Methyl impurity) | 139911-29-8
Code: JC-BB664 CAS: 139911-29-8 Chemical Formula: C7H8BFO2 Molecular Weight: 153.95 Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities Literature: Application: Methyl Impurity: ; (4-fluoro-2-methylphenyl)boronic acid (Methyl impurity) | 139911-29-8is useful as reference Impurity standard. 
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Product Name : 2-Ethyl-2-Hexanol ; 3-Methyl-3-heptanol | 5582-82-1
Code: JC-BB663 CAS: 5582-82-1 Chemical Formula: C8H18O Molecular Weight: 130.23 Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities Literature: Application: 2-Ethyl-2-Hexanol ; 3-Methyl-3-heptanol | 5582-82-1is useful as reference Impurity standard. 
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Product Name : 2-Methyl-4-(3-Aminophenyl)-3-Butyn-2-ol ; 4-(3-Aminophenyl)-2-methyl-3-butyn-2-ol ;69088-96-6
Code: JC-BB662 CAS: 69088-96-6 Chemical Formula:C11H13NO Molecular Weight:175.23 Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities Literature: Application: 2-Methyl-4-(3-Aminophenyl)-3-Butyn-2-ol ; 4-(3-Aminophenyl)-2-methyl-3-butyn-2-ol ;69088-96-6is useful as reference Impurity standard. 
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Product Name : 2-Methyl-3-Butyn-2-ol ; 3-Methyl-1-butyn-3-ol| 115-19-5
Code: JC-BB661 CAS: 115-19-5 Chemical Formula: C5H8O Molecular Weight: 84.12 Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities Literature: Application: 2-Methyl-3-Butyn-2-ol ; 3-Methyl-1-butyn-3-ol| 115-19-5is useful as reference Impurity standard. 
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Product Name : 2-(methoxymethyl)-6-methylpyridine ; 2-(methoxymethyl)-6-methylpyridine| 59303-12-7
Code: JC-BB660 CAS: 59303-12-7 Chemical Formula: C8H11NO Molecular Weight: 137.183 Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities Literature: Application: 2-(methoxymethyl)-6-methylpyridine ; 2-(methoxymethyl)-6-methylpyridine| 59303-12-7is useful as reference Impurity standard. 
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Product Name : N,N′-Dihydroxy-2,3-butanediimine Dimethylglyoxime| 95-45-4
Code: JC-BB659 CAS: 95-45-4 Chemical Formula: C4H8N2O2 Molecular Weight: 116.12 Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities Literature: Application: N,N′-Dihydroxy-2,3-butanediimine Dimethylglyoxime| 95-45-4is useful as reference Impurity standard. 
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Product Name : Methyl methanesulphonate Impurity F Synonym:Methanesulfonic acid methyl ester | 66-27-3
Code: JC-BB658 CAS: 66-27-3 Chemical Formula: C2H6O3S Molecular Weight: 110.13 Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities Literature: Application: Methyl methanesulphonate Impurity F Synonym:Methanesulfonic acid methyl ester | 66-27-3is useful as reference Impurity standard. 
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Product Name : Epinephrine Sulfonic Acid ; 3,4-Dihydroxy-α-[(methylamino)methyl]benzenemethanesulfonic Acid; 3,4-Dihydroxy-α-[(methylamino)methyl]-α-toluenesulfonic Acid | 26405-77-6
Code: JC-BB657 CAS: 26405-77-6 Chemical Formula: C₉H₁₃NO₅S Molecular Weight: 247.27 Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities Literature: Application: Epinephrine Sulfonic Acid ; 3,4-Dihydroxy-α-[(methylamino)methyl]benzenemethanesulfonic Acid; 3,4-Dihydroxy-α-[(methylamino)methyl]-α-toluenesulfonic Acid | 26405-77-6is useful as reference Impurity standard. ![Epinephrine Sulfonic Acid ; 3,4-Dihydroxy-α-[(methylamino)methyl]benzenemethanesulfonic Acid; 3,4-Dihydroxy-α-[(methylamino)methyl]-α-toluenesulfonic Acid | 26405-77-6](https://drjcrbio.com/wp-content/uploads/26405-77-6.png)
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Product Name : Uracil derivative ; 6-Amino-1-methyl-2,4-pyrimidinedione; 1-Methyl-6-aminouracil; 6-Amino-1-methyl-1H-pyrimidine-2,4-dione; 6-Amino-1-methyluracil | 2434-53-9
Code: JC-BB656 CAS: 2434-53-9 Chemical Formula: C5H7N3O2 Molecular Weight: 141.13 Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities Literature: Application: Uracil derivative ; 6-Amino-1-methyl-2,4-pyrimidinedione; 1-Methyl-6-aminouracil; 6-Amino-1-methyl-1H-pyrimidine-2,4-dione; 6-Amino-1-methyluracil | 2434-53-9is useful as reference Impurity standard. 
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Product Name : 3,4-Dihydro-1H-benzo[b]azepin-5(2H)-one ; 1,2,3,4-Tetrahydrobenzo[b]azepin-5-one| 1127-74-8
Code: JC-BB655 CAS: 1127-74-8 Chemical Formula: C10H11NO Molecular Weight: 161.2 Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities Literature: Application: 3,4-Dihydro-1H-benzo[b]azepin-5(2H)-one ; 1,2,3,4-Tetrahydrobenzo[b]azepin-5-one| 1127-74-8is useful as reference Impurity standard. ![3,4-Dihydro-1H-benzo[b]azepin-5(2H)-one ; 1,2,3,4-Tetrahydrobenzo[b]azepin-5-one| 1127-74-8](https://drjcrbio.com/wp-content/uploads/1127-74-8.png)
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Product Name : Azure A ; 3-Amino-7-(dimethylamino)phenazathionium Chloride; 5-Chloro-3-dimethylamino-7-amino-5H-phenothiazine;Azure A Chloride; Azure Blue Cert; Azurea Dye; N,N-Dimethylthionine;| 531-53-3
Code: JC-BB654 CAS: 531-53-3 Chemical Formula: C₁₄H₁₄N₃S •Cl Molecular Weight: 256.35+(35.45) Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities Literature: Application: Azure A ; 3-Amino-7-(dimethylamino)phenazathionium Chloride; 5-Chloro-3-dimethylamino-7-amino-5H-phenothiazine;Azure A Chloride; Azure Blue Cert; Azurea Dye; N,N-Dimethylthionine;| 531-53-3is useful as reference Impurity standard. 
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Product Name : Ethyl 4-methylbenzenesulfinate/ p-Toluenesulfinic acid ethyl Ester ; 4-methyl-benzenesulfinic acid ethyl ester | 1858-86-2
Code: JC-BB653 CAS: 1858-86-2 Chemical Formula: C9H12O2S Molecular Weight: 184.26 Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities Literature: Application: Ethyl 4-methylbenzenesulfinate/ p-Toluenesulfinic acid ethyl Ester ; 4-methyl-benzenesulfinic acid ethyl ester | 1858-86-2is useful as reference Impurity standard. 
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Product Name : Dimethyl Fumarate;Tetramethyl cyclobutane-1,2,3,4-tetracarboxylate | 14495-41-1
Code: JC-BB652 CAS: 14495-41-1 Chemical Formula: C₁₂H₁₆O₈ Molecular Weight: 288.25 Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities Literature: Application: Dimethyl Fumarate;Tetramethyl cyclobutane-1,2,3,4-tetracarboxylate | 14495-41-1is useful as reference Impurity standard. 
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Product Name : Sodium 2-methyl-2-thiazoline-4-carboxylate ; Acetylcysteine Impurity 1 Sodium Salt;2-methyl-4,5-dihydro-1,3-thiazole-4-carboxylate;15058-19-2
Code: JC-BB651 CAS: 15058-19-2 Chemical Formula: C₅H₆NO₂SNa Molecular Weight: 167.16 Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities Literature: Application: Sodium 2-methyl-2-thiazoline-4-carboxylate ; Acetylcysteine Impurity 1 Sodium Salt;2-methyl-4,5-dihydro-1,3-thiazole-4-carboxylate;15058-19-2is useful as reference Impurity standard. 
