Reference Standards

Medical Isotopes offers a wide range of reference standards, a standardized object or substance which is used as a measurement base for similar objects or substances, such as the pharmaceuticals of Doxycycline-d5 hyclate, Lathosterol-2,2,4,4-d4, Panthenol-d6, Cyclosporin A-13C2,d6, Sodium (+-)-2-Hydroxybutyrate-2,3,3-d3, and Isavuconazole-d4.


Unlabeled Reference Standards

Catalog No. Product Name Enrichment
Quantity Price
87212 Epirubicin Impurity G (Epirubicin Dimer)
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36667 EpitetracyclineHCl
200 mg $1,171   Add to Cart
64741 Δ9,11-7β-Eplerenone
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80259 Eplerenone EP Impurity A
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80252 Eplerenone EP Impurity B
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D80253 Eplerenone EP Impurity D
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80255 Eplerenone EP Impurity F Sodium Salt
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80256 Eplerenone EP Impurity G
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80258 Eplerenone Impurity 1
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36669 Epoprostenol Related Compound B
15 mg $1,171   Add to Cart
80067 Epoxiconazole Impurity 1
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80310 8-epi-11,12-Epoxy erythromycin A
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80293 Epoxy Exemestane (6-Alfa Isomer)
Synonyms:
6α-Spiro[androsta-1,4-diene-6,2’-oxiran]-3,17-dione;
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80296 Epoxy Exemestane (6-β Isomer)
Synonyms:
6 β-Spiro[androsta-1,4-diene-6,2’-oxiran]-3,17-dione;
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108663 trans-Epoxyphytomenadione
5 mg $390   Add to Cart
5273 Eprosartan
Synonyms:
((E)-3-[2-Butyl-1-[(4-carboxyphenyl)methyl]imidazol-5-yl]-2-(2- thienylmethyl)-2-propenoic Acid; SKF-108566);
5 mg $850   Add to Cart
25 mg $2,000   Add to Cart
80264 Eprosartan Impurity 3
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80265 Eprosartan Impurity 4
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80266 Eprosartan Impurity 5
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5438 Eprosartan Mesylate
5 mg $1,500   Add to Cart
25 mg $2,500   Add to Cart
80261 Eprosartan Mesylate
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36671 Eprosartan Related Compound A
20 mg $1,171   Add to Cart
80268 Eprosartan related compound A
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36672 Eprosartan Related Compound B
15 mg $1,171   Add to Cart
36673 Eprosartan Related Compound C
25 mg $1,171   Add to Cart
36674 Eprosartan Related Compound D
15 mg $1,171   Add to Cart
36675 Eprosartan Related Compound E
15 mg $1,171   Add to Cart
36670 Equilin
25 mg $786   Add to Cart
5439 (+/-)-Equol
1 mg $290   Add to Cart
5 mg $750   Add to Cart
87671 Ergocalciferol Glucuronide
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87670 Ergocalciferol Sulfate
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82939 Ergonovine (Ergometrine)
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36678 Ergonovine Maleate
100 mg $715   Add to Cart
36679 Ergotamine Tartrate
150 mg $715   Add to Cart
36680 Ergotaminine
100 mg $715   Add to Cart
80238 Eribulin Impurity 1
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80388 Erlotinib Carboxylic Acid
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80387 Erlotinib Hydroxy Metabolite
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80361 Erlotinib impurity 1
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80376 Erlotinib Impurity 10
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80377 Erlotinib Impurity 11
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80379 Erlotinib Impurity 12
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80380 Erlotinib Impurity 13
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80381 Erlotinib Impurity 14
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80382 Erlotinib Impurity 15
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80383 Erlotinib Impurity 16
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80384 Erlotinib Impurity 17
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80363 Erlotinib impurity 3
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80364 Erlotinib impurity 4
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80369 Erlotinib Impurity 5
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80373 Erlotinib Impurity 7
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80375 Erlotinib Impurity 9
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80358 Erlotinib impurity, 6,7-bis(2-chloroethoxy)
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80360 Erlotinib impurity, 6-(2-chloroethoxy)-7-(2-methoxyethoxy)
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80359 Erlotinib impurity, 6-(2-methoxyethoxy)-7-(2-chloroethoxy)
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O80357 Erlotinib O-Desmethyl Metabolite Isomer (M14) HCl
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80054 Ertapenem Acetic Acid Adduct Impurity
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80048 Ertapenem Dimer Amide Impurity
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80051 Ertapenem Dimer H2Oa
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80049 Ertapenem Dimer I
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80050 Ertapenem Dimer II
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80045 Ertapenem Impurity DIPP
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80044 Ertapenem Impurity Pro-maba
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80052 Ertapenem Methanolysis Impurity
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80055 Ertapenem Oxazinone Impurity
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80047 Ertapenem Ring Open Impurity
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80042 Ertapenem Side Chain Enantiomer 1
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80043 Ertapenem Side Chain Enantiomer 2 HCl
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80046 Ertapenem side chain impurity (propyl ester)
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80143 Ertugliflozin
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80404 Erucamide
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36681 Erythorbic Acid
50 mg $715   Add to Cart
36682 Erythritol
200 mg $715   Add to Cart
77223 erythro-Dihydro-Bupropion-D-Glucuronide
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76795 Erythromycin A (9,11-imino ether)
Synonyms:
Azithromycin impurity R;
1 mg $290   Add to Cart
5 mg $990   Add to Cart
80302 Erythromycin EP Impurity A
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C80303 Erythromycin EP Impurity C (Erythromycin E)
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80304 Erythromycin Impurity E
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80305 Erythromycin Impurity F
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80300 Erythronolide B
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80184 Erythrosine
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80231 Esbiothrin
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C77829 Escitalopram Impurity C
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80550 Esketamine Impurity B
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C80549 Esketamine Impurity C
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80482 Esmolol Acid Sodium Salt
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80485 Esmolol Dimer
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80484 Esmolol Isopropyl Amide Analog
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83981 Esomeprazole Impurity
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83966 Esomeprazole Impurity 1
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83986 Esomeprazole Impurity 2
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83987 Esomeprazole Impurity 3
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83989 Esomeprazole Impurity 5
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83965 Esomeprazole Magnesium
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83970 Esomeprazole Sodium Impurity 1
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83997 Esomeprazole Sodium Salt
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80075 Esreboxetine Metabolite A
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80076 Esreboxetine Metabolite B
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C80077 Esreboxetine Metabolite C
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5561 Estradiene Dione-3-Ketal
0.1 g $750   Add to Cart
0.25 g $1,500   Add to Cart
80192 Estradiol
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80186 Estradiol 17-β-Sulfate
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80175 Estradiol 3-Enanthate
Synonyms:
(17 β)-Estra-1,3,5(10)-triene-3,17-diol 3-heptanoate;; Estradiol 3-heptanoate;
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80183 Estradiol Benzoate Impurity E (17-epi- Estradiol Benzoate)
Synonyms:
α-Estradiol 3-Benzoate; &α;-Estradiol 3-Benzoate; 17&α;-Estradiol 3- Benzoate; 3-Benzoyloxy-17&α;-hydroxyoestra-1,3,5(10)- triene;
50 mg $550   Add to Cart
500 mg $1,600   Add to Cart
80193 Estradiol Enanthate Acetate
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80164 Estradiol Glucuronide
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80188 Estradiol Related Compound (2-Valeryl-17-beta-Estradiol-17- Valerate)
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5274 3,17β-Estradiol-3-methylether-17-decanoate
Synonyms:
17-O-Decanoyl-3,17ß-estradiol-3-methylether;
5 mg $850   Add to Cart
25 mg $2,000   Add to Cart
C80413 Estriol EP Impurity C
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80412 Estriol Impurity A
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80416 Estriol Impurity G
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5268 Estriol Trisulfate Trisodium Salt
Synonyms:
(Estra-1,3,5[10]-triene-3,16,17-triol Tris(hydrogensulfate) Trisodium Salt);
2.5 mg $850   Add to Cart
10 mg $2,000   Add to Cart
80240 Estrone Acetate
Synonyms:
3-(Acetyloxy)estra-1,3,5(10)-trien-17-one; 3-Acetoxyestra-1,3, 5(10)-trien-17-one; 3-Acetoxyestrone; 3-Acetylestrone; 3-O- Acetylestrone; Acetylestrone; Estrone 3-O-acetate; Hogival; Oestrone-3-acetate; Puboestrene; Estrone 3-Acetate;
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36683 Estropipate
500 mg $715   Add to Cart
C88045 Eszopiclone Impurity C
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80502 Etafedrine HCl (Ethylephedrine HCl)
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80429 Etaqualone
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80392 Ethacrynic Acid Impurity A
Synonyms:
2-[2,3-Dichloro-4-(1-oxobutyl)phenoxy]acetic Acid; (4-Butyryl-2,3 -dichlorophenoxy)acetic Acid; [2,3-Dichloro-4-(1-oxobutyl)phenoxy ]acetic Acid;
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5744 Ethambutol HCl
1 g    Request Quote
1 g    Request Quote
36687 Ethambutol Related Compound A
15 mg $1,171   Add to Cart
36688 Ethambutol Related Compound B
15 mg $1,171   Add to Cart
36686 EthambutolHCl
200 mg $715   Add to Cart
36691 Ethinyl Estradiol Related Compound A
20 mg $1,171   Add to Cart
80473 Ethinylesteradiol Impurity H (16-Oxo- Ethinylesteradiol)
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80474 Ethinylesteradiol Impurity L
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80476 (13S,14R,17R)-Ethinylestradiol
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80477 (13S,14R,17S)-Ethinylestradiol
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80478 (13S,14S,17R)-Ethinylestradiol
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80479 (13S,14S,17S)-Ethinylestradiol
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80162 Ethinylestradiol Impurity H (Mixture of Diastereomers)
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36693 Ethionamide
200 mg $715   Add to Cart
36694 Ethopabate Related Compound A
25 mg $1,171   Add to Cart
36695 Ethotoin
200 mg $715   Add to Cart
D17105 7-Ethoxy-d5-coumarin 99% D
10 mg $190   Add to Cart
50 mg $590   Add to Cart
9945 7-Ethoxycoumarin
Synonyms:
7-Ethoxy-1-benzopyran-2-one;
1 g $290   Add to Cart
5 g $990   Add to Cart
36696 Ethoxzolamide
200 mg $715   Add to Cart
64895 Ethyl (2S,4R)-4-Methylpipecolate
Synonyms:
Argatroban Related Compound 2;
25 mg $290   Add to Cart
125 mg $990   Add to Cart
37584 Ethyl (2S,4S)-4-methylpipecolate
Synonyms:
(2S,4S)-4-Methyl-2-piperidinecarboxylic Acid Ethyl Ester; (2S- trans)-4-Methyl-2-piperidinecarboxylic Acid Ethyl Ester; Argatroban related compound;
10 mg $290   Add to Cart
50 mg $990   Add to Cart
87619 Ethyl 3-(dimethylamino)-2-(4-hydroxyphenyl)propionate
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82180 Ethyl 3-methylisoxazole-4-carboxylate
Synonyms:
3-Methyl-4-isoxazolecarboxylic Acid Ethyl Ester; NSC 250960; 3-Methylisoxazole-4-carboxylic Acid Ethyl Ester;
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77748 Ethyl 3-Nitro Benzenesulfonate
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5680 Ethyl 5-chloro-2-indolecarboxylate
50 mg    Request Quote
5681 ethyl 7-nitro-1H-indole-2-carboxylate
50 mg    Request Quote
36697 Ethyl Acetate
1.2 mL/ampule $715   Add to Cart
36698 Ethyl Acrylate and Methyl Methacrylate Copoly-mer Dispersion
1.5 g $715   Add to Cart
O76490 3-O-Ethyl atorvastatin
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80684 Ethyl Flurbiprofen
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84441 Ethyl Pramipexole
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O85551 3-O-Ethyl rosuvastatin
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86476 Ethyl Salicylate
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