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
77578 7,8-Dihydro biopterin
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80540 Dihydro Ergosine
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80541 Dihydro Ergotamine Mesylate Impurity 1
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C80545 Dihydro Ergotamine Mesylate Impurity C
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D80546 Dihydro Ergotamine Mesylate Impurity D
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80547 Dihydro Ergotamine Mesylate Impurity E
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C81179 Dihydro Galantamine (Galantamine Impurity C)
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84940 5α-Dihydro progesterone
Synonyms:
(5α)-Pregnane-3,20-dione;
250 mg $90   Add to Cart
1 g $290   Add to Cart
85878 9-cis-13,14-Dihydro retinoic Acid
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D85882 9-cis-13,14-Dihydro retinoic acid-d5
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78515 10,11-Dihydro-10,11-dihydroxy carbamazepine
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14311 10,11-Dihydro-10-hydroxycarbamazepine
Synonyms:
Licarbazepine;
10 mg $190   Add to Cart
50 mg $590   Add to Cart
57228 N-(4,5-Dihydro-1H-imidazol-2-yl)-6-quinoxalinamine
Synonyms:
Brimonidine impurity II; N-(4,5-dihydro-1H-imidazol-2-yl)-6-quinoxalinamine; Brimonidine impurity A;
10 mg $290   Add to Cart
50 mg $990   Add to Cart
5564 7-Hydroxy-3,4-dihydro-1H-quinolin-2-one
0.1 g $750   Add to Cart
0.25 g $1,500   Add to Cart
4676 1-Acetyl-1,2-dihydro-3H-pyrrolo[2,3-β]pyridin-3-one
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86314 (1S,4R)-3,4-Dihydro-4-hydroxy-1-phenyl-2-(1H)- isoquinolinecarboxylic acid (3R)-1-azabicyclo[2,2,2]oct-3-yl ester
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9466 3,4-Dihydro-7-hydroxyquinoline-2(1H)-one
Synonyms:
7-Hydroxycarbostyril; Aripiprazole impurity 13;
1 g $90   Add to Cart
5 g $290   Add to Cart
86611 Dihydro-N-Caffeoyltyramine
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5428 Dihydroartemisinin
1 g    Request Quote
69531 4’,5’-Dihydrocephradine
Synonyms:
Cefradine impurity 1;
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5111 C4 Dihydroceramide
Synonyms:
N-Butylsphinganine;
5 mg $850   Add to Cart
25 mg $1,850   Add to Cart
80402 17-Dihydroequilenin sulfate
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64385 Dihydrogenistein
10 mg $190   Add to Cart
50 mg $590   Add to Cart
83592 Dihydronicotinamide Adenine Dinucleotide
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84250 Dihydropenicillin F Potassium Salt
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86237 Dihydrostreptomycin B
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86238 Dihydrostreptomycin Sulfate Impurity A (Streptidine)
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D86239 Dihydrostreptomycin Sulfate Impurity D
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45522 Dihydroxy bendamustine
10 mg $290   Add to Cart
50 mg $990   Add to Cart
81142 Dihydroxy Flupentixol diHCl
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86277 (3S,5S)-Dihydroxy simvastatin
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84362 11β,17α-Dihydroxy-17-[(phosphonooxy)methyl]-D- homoandrosta-1,4-diene-3,16-dione
5 mg $1,890   Add to Cart
1 mg $590   Add to Cart
81924 2,5-Dihydroxy-3,4-dimethoxy-6-methylbenzenebutanoic acid
Synonyms:
2H-QS-4;
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80919 5,7-Dihydroxy-3,8-dimethoxyflavone
Synonyms:
Gnaphaline A (5,7-Dihydroxy-3,8-Dimethoxyflavone);
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78671 3,5-Dihydroxy-N-methyl protriptyline
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80080 Diisopropyl Ether
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86550 Diisopropyl Tenofovir Fumarate
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74242 Diltiazem
1 g $1,600   Add to Cart
79193 Diltiazem impurity A (2-Epi isomer)
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79198 Diltiazem Impurity G (N-Desmethyl Desacetyl Diltiazem HCl)
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O79189 Diltiazem Impurity H (N,N,O-Tridesmethyl Desacetyl Diltiazem)
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36892 Diluted Isosorbide Dinitrate
500 mg $715   Add to Cart
36894 Diluted Isosorbide Mononitrate Related Com-pound A
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79863 Dimefline Hydrochloride
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D79934 Dimenhydrinate Impurity D
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79936 Dimenhydrinate Impurity F
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79932 Dimenhydrinate Impurity H HCl
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79935 Dimenhydrinate Impurity J
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79933 Dimenhydrinate Impurity K (Bis(diphenylmethy) Ether)
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79937 Dimenhydrinate Impurity(8-chloro-1-methyl-2,3,6,7-tetrahydro-1H- purine-2,6-dione)
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79234 Dimethindene
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79235 Dimethindene Impurity F
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79236 Dimethindene Impurity G
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79233 Dimethindene Impurity H (2-[(1RS)-1-(2-ethenyl-1H-Inden-3-yl) ethyl]pyridine)
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79237 Dimethindene Impurity I
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83001 Dimethoxy Analogue of Mycophenolic Acid
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83104 6,8-Dimethoxy moxifloxacin
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5572 6,7-Dimethoxy-1,2,3,4-tetrahydro-isoquinoline-3-carboxylic acid HCl
0.1 g $750   Add to Cart
0.25 g $1,500   Add to Cart
108472 N-[4,6-Dimethoxy-2-(4-methoxy-1-piperidinyl)-5-pyrimidinyl]-3,3- dimethylbutanamide
Synonyms:
PF-05020182;
5 mg $190   Add to Cart
25 mg $590   Add to Cart
84691 Dimethyl Acetylphosphoramidate
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74243 Dimethyl Ethylenebisdithiocarbamate
100 mg $1,590   Add to Cart
86094 Dimethyl Sildenafil
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86161 Dimethylacetildenafil
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5595 3-(1-(dimethylamino)ethyl)phenol
50 mg $1,300   Add to Cart
500 mg $2,500   Add to Cart
4811 2-Acetyl-6-(dimethylamino)naphthalene
Synonyms:
(1-[6-(Dimethylamino)-2-naphthalenyl]);
25 mg $950   Add to Cart
100 mg $2,200   Add to Cart
36522 1-[3-(Dimethylamino)propyl]-1-(4-fluorophenyl)-1,3-dihydro-5- isobenzofurancarboxamide
Synonyms:
Citalopram Related Compound A; Citalopram Hydrochloride EP Impurity A; Citalopram Related Compound I;
1 mg $190   Add to Cart
5 mg $590   Add to Cart
77160 Dimethylaminoantipyrine
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85591 5-(4-Dimethylaminobenzylidene)rhodanine
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86551 Dimethylaminocarboxymethyl POC Tenofovir Fumarate
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79164 N-(3-Dimethylaminopropyl)desipramine dihydrochloride
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5563 4-Dimethylaminopyridine
Synonyms:
4-(Dimethylamino)pyridine; DMAP;
0.25 g $1,500   Add to Cart
0.1 g $750   Add to Cart
88504 2-[[3-[4-[2-(1,1-Dimethylethyl)-6-(trifluoromethyl)-4-pyrimidinyl ]-1-piperazinyl]propyl]thio]-4(1H)-pyrimidinone
Synonyms:
Lu 201640; 2-[[3-[4-[2-(1,1-Dimethylethyl)-6-(trifluoromethyl)-4- pyrimidinyl]-1-piperazinyl]propyl]thio]-4(3H)-pyrimidinone; A 37203;
10 mg $290   Add to Cart
50 mg $890   Add to Cart
81941 Dimethylheptene Methylamine HCl (Isometheptene HCl)
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108489 2,5-Dimethylphenol
25 g $190   Add to Cart
108651 1,2-Dimyristoyl-sn-glycero-3-phosphocholine
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5627 2,4-dinitro-1H-imidazole
50 mg    Request Quote
36610 Dinoprostone Related Compound C
20 mg $1,171   Add to Cart
79727 Diosmetin- Beta-D-glucuronide
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36611 Diosmin for System Suitability
15 mg $1,171   Add to Cart
79724 Diosmin Impurity 1
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O79719 Diosmin-7-O-beta-D-Glucoside
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86120 Dioxohongdenafil
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36612 Dioxybenzone
150 mg $715   Add to Cart
D79203 Dipenhyldramine-d4 HCl
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36613 Diphenhydramine Citrate
200 mg $715   Add to Cart
79202 Diphenhydramine Impurity B HCl
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C79214 Diphenhydramine Impurity C HCl
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79199 Diphenhydramine Impurity K
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79200 Diphenhydramine Methiodide
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79204 Diphenhydramine N-Glucuronide
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36614 Diphenhydramine Related Compound A
15 mg $1,171   Add to Cart
76525 Diphenylacetic Acid
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86803 Diphenylmethane
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7477 1,2-Bis[(s,s)-2,5-diphenylphospholano]ethane-(1,5-cycloocta-diene )rhodium(I)tetrafluoroborate
5 mg $875   Add to Cart
25 mg $2,000   Add to Cart
36618 Dipivefrin Related Compound B
25 mg $1,171   Add to Cart
36619 Dipivefrin Related Compound E
25 mg $1,171   Add to Cart
36617 DipivefrinHCl
200 mg $715   Add to Cart
74147 (R,S)-2,6-Dipropylamino-4,5,6,7-tetrahydrobenzothiazole dHCl
15 mg $1,550   Add to Cart
25 mg $2,115   Add to Cart
5429 Dipyridamole
1 g    Request Quote
79514 Dipyridamole Impurity 1
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79515 Dipyridamole Impurity 2
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C79520 Dipyridamole Impurity C
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D79521 Dipyridamole Impurity D
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79522 Dipyridamole Impurity E
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79517 Dipyridamole Impurity I
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79356 Diquafosol Impurity 1
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79357 Diquafosol Impurity 2
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79358 Diquafosol Impurity 3
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79253 Dirithromycin Impurity B
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C79254 Dirithromycin Impurity C
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79364 Disalicylide
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36622 Disodium 5’-Uridylate
500 mg $715   Add to Cart
36620 Disodium Guanylate
350 mg $715   Add to Cart
79404 Disophenol
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36623 Disopyramide Phosphate
200 mg $715   Add to Cart
86244 Disulfanyl Spironolactone
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86148 Dithio-Desethyl Carbodenafil
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86114 Dithio-Desmethyl Carbodenafil
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78761 DL-Homocysteine Thiolactone
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80345 DL-Metanephrine Glucuronide
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80344 DL-Metanephrine Sulfate Sodium Salt
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83250 DL-Methionine
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80347 DL-Normetanephrine Glucuronide
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80346 DL-Normetanephrine Sulfate
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87361 DM-4104
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87362 DM-4105
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83262 DMAC acyl glucuronide
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83263 DMAC phenolic glucuronide
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81430 DO2A
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79823 Dobutamine Impurity B
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C79824 Dobutamine Impurity C HCl
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36625 DobutamineHCl
400 mg $715   Add to Cart
79484 Docetaxel Crotonaldehyde Analog
1 mg $790   Add to Cart
79488 Docetaxel Impurity 1
Synonyms:
(&α;R, βS)- β-[[(1,1-Dimethylethoxy)carbonyl]amino]- &α;-hydroxybenzenepropanoic Acid (2aR,4S,4aS,6R,9S,11S,12S ,12aR,12bS)-12b-(Acetyloxy)-12-(benzoyloxy)-6-[[(2,2- dichloroethoxy)carbonyl]oxy]-2a,3,4,4a,5,6,9,10,11,12,12a,12b- dodecahydro-4,11-dihydroxy-4a,8,13,13-tetramethyl-5-oxo-7,11- methano-1H-cyclodeca[3,4]benz[1,2-b]oxet-9-yl Ester; [2aR- [2a&α;,4 β,4a β,6 β,9&α;(&α;R, βS*),11&α;,12&α;,12a&α;,12b&α;]]- β-[[(1,1-Dimethylethoxy)carbonyl; 10-O-2,2-Dichloroethoxycarbonyl Docetaxel;
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79489 Docetaxel Impurity 2
Synonyms:
(&α;R, βS)- β-[[(1,1-Dimethylethoxy)carbonyl]amino]- &α;-hydroxybenzenepropanoic Acid (2aR,4S,4aS,6R,9S,11S,12S ,12aR,12bS)-12b-(Acetyloxy)-12-(benzoyloxy)-4-[[(2,2- dichloroethoxy)carbonyl]oxy]-2a,3,4,4a,5,6,9,10,11,12,12a,12b- dodecahydro-6,11-dihydroxy-4a,8,13,13-tetramethyl-5-oxo-7,11- methano-1H-cyclodeca[3,4]benz[1,2-b]oxet-9-yl Ester; [2aR- [2a&α;,4 β,4a β,6 β,9&α;(&α;R, βS*),11&α;,12&α;,12a&α;,12b&α;]]- β-[[(1,1-Dimethylethoxy)carbony;
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79491 Docetaxel Impurity 4
Synonyms:
(4S,5S)-2,2-Dimethyl-4-phenyl-3,5-oxazolidinedicarboxylic Acid 3- (1,1-Dimethylethyl) Ester; (4S-cis)-2,2-Dimethyl-4-phenyl-3,5-oxazolidinedicarboxylic Acid 3 -(1,1-Dimethylethyl) Ester;
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79492 Docetaxel Impurity 5
Synonyms:
O-BOC-N-pyruvyl docetaxel; (2aR,4S,4aS,6R,9S,11S,12S,12aR,12bS)-12b-Acetoxy-9-(((2R,3S)-2- ((tert-butoxycarbonyl)oxy)-3-(2-oxopropanamido)-3-phenylpropanoyl )oxy)-4,6,11-trihydroxy-4a,8,13,13-tetramethyl-5-oxo-2a,3,4,4a,5, 6,9,10,11,12,12a,12b-dodecahydro-1H-7,11-methanocyclodeca[3,4] benzo[1,2-b]oxet-12-yl Benzoate;
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79480 Docetaxel Metabolite M2
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79485 Docetaxel Related Compound 1 ((2R, 3S)-3-Phenylisoserine HCl)
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79486 Docetaxel Related Compound 2 ((2R, 3S)-Boc-3-Phenylisoserine)
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94147 (4Z,7Z,10Z,13Z,16Z) 4,7,10,13,16-Docosapentaenoic acid methyl ester
Synonyms:
(all-Z)-4,7,10,13,16-Docosapentaenoic Acid Methyl Ester ;
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79246 Docusate Sodium Related Compound A Sodium Salt
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79245 Docusate Sodium Related Compound B Disodium Salt
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C79247 Docusate Sodium Related Compound C Sodium Salt
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D79248 Docusate Sodium Related Compound D Sodium Salt
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79400 Dodecanol (Lauryl Alcohol)
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5432 Doibutramine
0.1 mg $650   Add to Cart
1 g $1,500   Add to Cart
79224 Dolutegravir Impurity 1
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79226 Dolutegravir Impurity 3
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79227 Dolutegravir Impurity 4
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