Parent Category: Reference Standards

Unlabeled Reference Standards


Standards are materials containing a precisely known concentration of a substance for use in quantitative analysis in assays of drug substances and formulations, blood analyses, limit tests, or controls. A standard can also provide a reference that can be used to calibrate analytical instruments as in identification tests, system suitability tests, or chromatographic peak markers.

The standards listed below are not labeled in any position. They are used for multiple avenues of focus such as environmental standards, in-born errors, pharmaceutical reference standards, unlabeled reference standards and impurities reference standards.

Catalog No. Product Name Enrichment
Quantity Price
105875 D-Aspartic acid sodium salt
Synonyms:
Sodium D-aspartate;
250 g $190   Add to Cart
1 kg $590   Add to Cart
89643 L-Aspartic anhydride HCl
Synonyms:
(3S)-3-Aminodihydro-2,5-furandione Hydrochloride;(S)-3- Aminodihydro-2,5-furandione Hydrochloride;;
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76595 β-Aspartyl aspartic acid
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76448 Asperulosidic acid
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32807 Aspirin impurity E
Synonyms:
Salsalate; 2-Carboxyphenyl salicylate; Acetylsalicylic Acid Impurity E;
50 mg $190   Add to Cart
250 mg $590   Add to Cart
D89647 Asterinin D
Synonyms:
2,3,4,5-Tetradehydroprolyl-L-2-aminobutanoyl-L-seryl-(R)-3-phenyl - β-alanyl-L-2-amino-butanoic Acid; Astin J; 2-[[3-[[3- hydroxy-2-[2-(1H-pyrrole-2-carbonylamino)butanoylamino]propanoyl] amino]-3-phenylpropanoyl]amino]butanoic Acid; (2S)-1H-Pyrrole-2- carbonyl-(2S)-2-aminobutanoyl-L-seryl-(3R)-3-phenyl- β- alanyl-2-amino-butanoic Acid;
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111111 AT-130
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89652 AT-13148
Synonyms:
(+)-(S)-2-Amino-1-(4-chlorophenyl)-1-[4-(1H-pyrazol-4-yl)phenyl] ethanol; (&α;S)-&α;-(Aminomethyl)-&α;-(4-chlorophenyl )-4-(1H-pyrazol-4-yl)-benzenemethanol;
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76610 Ataluren acyl glucuronide
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77048 Atazanavir benzylidenehydrazine analogue
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77043 Atazanavir benzylidenehydrazine carbamate
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77052 Atazanavir impuirty 5
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77054 Atazanavir impurity 2
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77053 Atazanavir impurity 3
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77049 Atazanavir impurity 4
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C77051 Atazanavir impurity C
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89650 Atazanavir N13-descarboxymethyl
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89651 Atazanavir N2-descarboxymethyl
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77046 Atazanavir R,S,S,R-diastereomer
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77040 Atazanavir R,S,S,S-diastereomer
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77042 Atazanavir S,R,R,S-diastereomer
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77047 Atazanavir S,S,R,S-diastereomer
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77041 Atazanavir S,S,S,R-diastereomer
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33435 Atazanavir sulfate
5 mg $90   Add to Cart
10 mg $290   Add to Cart
D76405 Atenolol EP impurity D
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76427 Atenolol EP impurity F
Synonyms:
Atenolol related compound D; 4,4’’-[[(1-Methylethyl)imino]bis[(2-hydroxy-3,1- propanediyl)oxy]]bis-benzeneacetamide;
25 mg $290   Add to Cart
125 mg $990   Add to Cart
76429 Atenolol glucuronide
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36368 Atenolol Related Compound B
Synonyms:
Atenolol Impurity H;
20 mg $1,171   Add to Cart
53987 Atipamezole hydrochloride
5 mg $129   Add to Cart
25 mg $390   Add to Cart
76787 Atomoxetine desmethyl impurity
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76782 Atomoxetine EP Impurity A hydrochloride
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76788 Atomoxetine EP impurity F hydrochloride
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76781 Atomoxetine EP impurity G dihydrochloride
1 mg $890   Add to Cart
76783 Atomoxetine impurity B
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C76784 Atomoxetine impurity C
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D76785 Atomoxetine impurity D
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36372 Atomoxetine Related Compound A
10 mg $1,171   Add to Cart
36373 Atomoxetine Related Compound B
10 mg $1,171   Add to Cart
36374 Atomoxetine related compound C
Synonyms:
rac-Atomoxetine EP Impurity C hydrochloride;
1 mg $590   Add to Cart
36383 Atomoxetine S-Isomer
10 mg $1,171   Add to Cart
89653 Atomoxetine-N-amide
Synonyms:
(R)-1-Methyl-1-(3-phenyl-3-(o-tolyloxy)propyl)urea; ;
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76495 Atorvastatin 2-fluoro analog
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76463 Atorvastatin 3-deoxyhept-2E-enoic acid
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76492 Atorvastatin 3-deoxyhept-2Z-enoic acid sodium salt
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76496 Atorvastatin 3-fluoro analog
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76464 Atorvastatin 3-oxo sodium salt
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18381 Atorvastatin acetonide
Synonyms:
(4R,6R)-6-[2-[2-(4-Fluorophenyl)-5-(1-methylethyl)-3-phenyl-4- [(phenylamino)carbonyl]-1H-pyrrol-1-yl]ethyl]-2,2-dimethyl-1,3- dioxane-4-acetic Acid; Atorvastatin impurity 2;
10 mg $190   Add to Cart
50 mg $590   Add to Cart
36375 Atorvastatin Calcium
100 mg $715   Add to Cart
76472 Atorvastatin calcium trihydrate EP impurity B
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18400 Atorvastatin cyclic (fluorophenyl) sodium salt impurity
Synonyms:
1b-(4-Fluorophenyl)hexahydro-β,7-dihydroxy-7-(1-methylethyl) -1a-phenyl-7a-[(phenylamino)carbonyl]-3H-oxireno[3,4]pyrrolo[2,1- b][1,3]oxazine-3-butanoic Acid Sodium; ATV-cycloFP Sodium;
1 mg $590   Add to Cart
5 mg $1,890   Add to Cart
76474 Atorvastatin cyclic sodium salt (isopropyl) impurity
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76461 Atorvastatin dehydro sodium salt
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111190 Atorvastatin EP Impurity B
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76476 Atorvastatin EP impurity E
Synonyms:
ent-Atorvastatin;
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76456 Atorvastatin EP impurity F
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110733 Atorvastatin epoxy pyrrolooxazin 7-hydroxy analog
10 mg $1,290   Add to Cart
76494 Atorvastatin epoxy pyrrolooxazin tricyclic analog
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89656 Atorvastatin epoxy pyrrolooxazin tricyclic potassium salt impurity
Synonyms:
Sodium 2-(9-(4-Fluorophenyl)-1b-isopropyl-9a-phenyl-1a- (phenylcarbamoyl)octahydro-1aH-5,9-epoxyoxireno[2’,3’:3,4] pyrrolo[2,1-b][1,3]oxazocin-3-yl)acetate;;
5 mg $5,990   Add to Cart
76477 Atorvastatin impurity 10
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76478 Atorvastatin impurity 11
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76479 Atorvastatin impurity 12
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76480 Atorvastatin impurity 13
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76497 Atorvastatin impurity 15
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76498 Atorvastatin impurity 16
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76500 Atorvastatin impurity 17
Synonyms:
2-[2-(4-Fluorophenyl)-2-oxo-1-phenylethylidene]-4-methyl-3-oxo-N- phenylpentanamide;
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76454 Atorvastatin impurity 6
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76473 Atorvastatin impurity 9
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76458 Atorvastatin impurity F sodium salt
Synonyms:
Amide impurity;
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76491 Atorvastatin isopropyl ester
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89657 Atorvastatin phenanthrene Impurity
Synonyms:
(3R,5R)-3,5-Dihydroxy-7-(2-isopropyl-3-(phenylcarbamoyl)-1H- dibenzo[e,g]indol-1-yl)Heptanoic Acid;
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36376 Atorvastatin Related Compound A
20 mg $1,171   Add to Cart
36377 Atorvastatin Related Compound B
20 mg $1,171   Add to Cart
36378 Atorvastatin Related Compound C
20 mg $1,171   Add to Cart
36379 Atorvastatin Related Compound D
10 mg $1,171   Add to Cart
36380 Atorvastatin Related Compound E
10 mg $1,171   Add to Cart
36381 Atorvastatin Related Compound H
20 mg $1,171   Add to Cart
36382 Atorvastatin Related Compound I
20 mg $1,171   Add to Cart
76455 Atorvastatin sodium salt
Synonyms:
Atorvastatin impurity 8;
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89654 (3R,5R)-Atorvastatin sodium salt
Synonyms:
( βR,ΔR)-2-(4-Fluorophenyl)- β,Δ-dihydroxy-5-(1 -methylethyl)-3-phenyl-4-[(phenylamino)carbonyl]-1H-pyrrole-1- heptanoic Acid Monosodium Salt; [R-(R*,R*)]-2-(4-Fluorophenyl)- β,Δ-dihydroxy-5-(1-methylethyl)-3-phenyl-4-[(phenylamino )carbonyl]-1H-pyrrole-1-heptanoic Acid Monosodium Salt;;
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18391 Atorvastatin tert-butyl ester
Synonyms:
(βR,δR)-2-(4-Fluorophenyl)-β,δ-dihydroxy-5-(1 -methylethyl)-3-phenyl-4-[(phenylamino)carbonyl]-1H-pyrrole-1- heptanoic Acid 1,1-Dimethylethyl Ester; Atorvastatin impurity 3;
10 mg $290   Add to Cart
50 mg $990   Add to Cart
76518 Atosiban Impurity B
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D76519 Atosiban Impurity D
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76520 Atosiban impurity F
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76521 Atosiban impurity G
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76808 Atovaquone EP impurity B
Synonyms:
Atovaquone related compound A; cis-Atovaquone;
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76802 Atovaquone impurity 1
Synonyms:
trans-4-(4-Chlorophenyl)-1-acetylcyclohexane;
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76803 Atovaquone impurity 2
1 g $190   Add to Cart
5 g $590   Add to Cart
76805 Atovaquone impurity 3
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76806 Atovaquone indene isomer
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77024 Atracurium impurity 2
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C77016 Atracurium besilate impurity C1 and C2 iodide
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C77021 Atracurium besilate impurity C1 and C2 iodide mixture
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C77010 Atracurium besilate impurity C2 iodide
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77034 (R-trans, R-trans)-Atracurium Besylate
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77035 (R-cis, R-trans)-Atracurium Besylate
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89659 (R)-trans-Atracurium besylate
Synonyms:
(1R,1’R,2S,2’S)-2,2’-[1,5-pentanediylbis[oxy(3-oxo-3,1- propanediyl)]]bis[1-[(3,4-dimethoxyphenyl)methyl]-1,2,3,4- tetrahydro-6,7-dimethoxy-2-methyl-Isoquinolinium Benzenesulfonate;
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77031 Atracurium besylate EP impurity B
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D77015 Atracurium besylate impurity D iodide
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D77032 Atracurium besylate impurity D2 iodide
Synonyms:
cis-Quaternary alcohol;
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77023 Atracurium impurity 1
5 mg $390   Add to Cart
77026 Atracurium impurity 4
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77028 Atracurium impurity 6
Synonyms:
(R)-Laudanosine N-3-((5-Hydroxypentyl)oxy)-3-oxopropyl benzenesulfonate; cis-Quaternary alcohol;
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77020 Atracurium impurity A1 and A2 mixture
Synonyms:
trans-Monoquatenary and cis-monoquatenary mixture;
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C77014 Atracurium impurity C
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77030 Atracurium impurity E
Synonyms:
cis-Quaternary acid;
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77033 Atracurium impurity G
Synonyms:
R-Laudanosine;
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77011 Atracurium impurity H
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77012 Atracurium impurity I
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77013 Atracurium impurity K
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77022 Atracurium impurity V
5 mg $590   Add to Cart
77017 Atracurium iodide
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89661 Cis-Cis-Atracurium-3-oxopropoxy dibesylate
Synonyms:
(1R,2R)-1-(3,4-Dimethoxybenzyl)-2-(3-(3-((5-((3-((1R,2R)-1-(3,4- dimethoxybenzyl)-6,7-dimethoxy-2-methyl-1,2,3,4- tetrahydroisoquinolin-2-ium-2-yl)propanoyl)oxy)pentyl)oxy)-3- oxopropoxy)-3-oxopropyl)-6,7-dimethoxy-2-methyl-1,2,3,4- tetrahydroisoquinolin-2-ium Benzenesulfonate;
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108794 Atraton
250 mg $150   Add to Cart
C110236 Atrazine 13C3 100 µg/mL
Synonyms:
Atrazine 13C3 (ring 13C3);
1.1 ml $973   Add to Cart
D110237 Atrazine-2-hydroxy-d5 100 µg/mL in Methanol
Synonyms:
4-(Isopropylamino)-6-(1,1,2,2,2-pentadeuterioethylamino)-1,3,5- triazin-2-ol; Atrazine-2-hydroxy D5 (ethyl D5); Atrazine-2- hydroxy D5;
1.1 ml $292   Add to Cart
108795 Atrazine-desethyl-2-hydroxy
Synonyms:
Atrazine-desethylhydroxy;
1 ml $98   Add to Cart
108796 Atrazine-desisopropyl-2-hydroxy
Synonyms:
Atrazine-desisopropylhydroxy;
1 ml $130   Add to Cart
110238 Atrazine-mercapturate 100 µg/mL in Acetonitrile
1.1 ml $298   Add to Cart
C89664 Atrazine-13C4
Synonyms:
6-Chloro-N-ethyl-N’-(1-methylethyl)-1,3,5-triazine-2,4-diamine- 13C4;2-Chloro-4-(ethylamino)-6-(2-propylamino)-s-triazine-13C4; AAtrex-13C4; Gesamprim-13C4; Gesaprim-13C4; Gesaprim-13C4;
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D76609 Atropine impurity D and E
Synonyms:
Mixture of 6-beta-hydroxyhyoscyamine and 7-beta- hydroxyhyoscyamine;
1 mg $590   Add to Cart
76607 Atropine impurity G
Synonyms:
Racemic littorine;
1 mg $790   Add to Cart
76608 Atropine sulfate
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89666 Atroviridin
Synonyms:
5,8,12-Trihydroxy-2,2-dimethyl-2H,6H-Pyrano[3,2-b]xanthen-6-one;
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O89663 Auramine O HCl
Synonyms:
4,4’-Carbonimidoylbis[N,N-dimethyl-monohydrochloride Benzenamine; C.I. Basic Yellow 2; C.I. Basic Yellow 2 monohydrochloride; ADC Auramine O; Aizen Auramine; Aizen Auramine OH; Aizen Auramine OW 100; Aizen Auramine Conc.SFA; Arazine Yellow; Auramin; Auramine; Auramine 0-100; Auramine A1; Auramine Extra; Auramine Extra 0- 100; Auramine Extra 0-125; Auramine Extra Conc. A; Auramine FAAuramine FWA; Auramine II; Auramine Lake Yellow O; Auramine N; Auramine O Extra Conc. A Export; Auramine ON; Auramine OO; Aurami;
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89667 Aurantinidin Chloride
Synonyms:
3,5,6,7-Tetrahydroxy-2-(4-hydroxyphenyl)-1-benzopyrylium Chloride; 3,4’,5,6,7-Pentahydroxy-flavylium Chloride; 6- Hydroxypelargonidin; 6-Hydroxypelargonidin Chloride; Aurantinidin; Aurantinidol Chloride;
2.5 mg $475   Add to Cart
5 mg $680   Add to Cart
101210 Aureothricin
Synonyms:
Farcinicin;
10 mg $590   Add to Cart
50 mg $1,790   Add to Cart
110864 AV-412 Tosylate
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76823 Avanafil impurity 10
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76824 Avanafil impurity 11
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76825 Avanafil impurity 12
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76826 Avanafil impurity 13
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76832 Avanafil impurity 1
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76831 Avanafil impurity 14
Synonyms:
Dechloro-(R)-avanafil;
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76833 Avanafil impurity 2
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76834 Avanafil impurity 3
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76835 Avanafil impurity 4
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76836 Avanafil impurity 5
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76837 Avanafil impurity 6
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76838 Avanafil impurity 7
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76818 Avanafil impurity 8
Synonyms:
(R)-Avanafil;
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76819 Avanafil impurity 9
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76830 Avanafil metabolite (M-16)
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76827 Avanafil metabolite (M-4) I
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76829 Avanafil metabolite (M-4) II
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76820 Avanafil related compound 1
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76821 Avanafil related compound 2
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76822 Avanafil related compound 3
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63039 Avermectin B1a
Synonyms:
Abamectin B1a;
1 g $290   Add to Cart
5 g $990   Add to Cart
76711 Avibactam
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89673 Avibactam butylammonium salt
Synonyms:
Butan-1-aminium (1R,2S,5R)-2-Carbamoyl-7-oxo-1,6- diazabicyclo[3.2.1]octan-6-yl Sulfate; Avibactam Impurity 8;
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