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
85553 (S)-Ruxolitinib
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37339 Saccharin
200 mg $715   Add to Cart
37340 Saccharin Calcium
100 mg $715   Add to Cart
37341 Saccharin Sodium
100 mg $715   Add to Cart
D86197 (2S, 4S)-Sacubitril-d4
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37342 Safflower Oil
1 g $715   Add to Cart
86457 (1S, 3R, 5S, 2S)-Saxagliptin
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86458 (1R, 3S, 5R, 2S)-Saxagliptin
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86459 (1S, 3S, 5S, 2R)-Saxagliptin
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74347 Saxagliptin HCl
10 mg $1,750   Add to Cart
25 mg $2,450   Add to Cart
5519 Sclareol
Synonyms:
(1R,2R,8aS)-Decahydro-1-(3-hydroxy-3-methyl-4-pentenyl)-2,5,5,8a- tetramethyl-2-naphthol;
1 g    Request Quote
5520 Sclareolide
0.1 g $750   Add to Cart
0.25 g $1,500   Add to Cart
16888 Scopolamine butylbromide
Synonyms:
(-)-N-Butylscopolamine bromide; Hyoscine N-butyl bromide; N-Butylscopolammonium Bromide; Hyoscine Butylbromide;
250 mg $190   Add to Cart
1 g $590   Add to Cart
5521 Seratrodast
0.25 g $1,500   Add to Cart
0.1 g $750   Add to Cart
61708 (R)-Sertaconazole
Synonyms:
Arasertaconazole;
   Request Quote
85984 (1R,4R)-Sertraline 4-chlorophenyl impurity HCl
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5522 Sertraline HCl
Synonyms:
(1S,4S)-4-(3,4-Dichlorophenyl)-1,2,3,4-tetrahydro-N-methyl-1- naphthalenamine hydrochloride;
50 mg $325   Add to Cart
500 mg $900   Add to Cart
85994 (1R,4S)-trans-Sertraline HCl
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37349 SertralineHClRacemic Mixture
25 mg $1,171   Add to Cart
37350 SertralineHClRelated Compound A
25 mg $1,185   Add to Cart
37346 Sesame Oil
1 mL/ampule $715   Add to Cart
37347 Sesame Oil Related Compound A
6 mg/vial $1,171   Add to Cart
37348 Sesame Oil Related Compound B
6 mg/vial $1,171   Add to Cart
5795 Sevelamer
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37351 Sevoflurane
1 mL $715   Add to Cart
37352 Sevoflurane Related Compound A
0.2 mL $1,171   Add to Cart
37353 Sevoflurane Related Compound B
0.2 mL $1,171   Add to Cart
37354 Sevoflurane Related Compound C
0.2 mL $1,171   Add to Cart
74348 rac SGA Bromide - Glycopyrrolate analog
10 mg $1,990   Add to Cart
25 mg $2,990   Add to Cart
5699 Sildenafil
50 mg    Request Quote
37357 Sildenafil Related Compound A
10 mg $1,171   Add to Cart
36493 Silicified Microcrystalline Cellulose
1 g $715   Add to Cart
37355 Silybin
50 mg $715   Add to Cart
37356 Silydianin
20 mg $715   Add to Cart
5597 Simvastatin Hydroxy Acid Sodium Salt
5 mg $190   Add to Cart
25 mg $590   Add to Cart
4894 Simvastatin Hydroxy Acid, Ammonium Salt
5 mg $1,500   Add to Cart
10 mg $2,500   Add to Cart
14355 Simvastatin hydroxyl acid sodium salt
Synonyms:
Simvastatin, Sodium Salt;
25 mg $500   Add to Cart
86352 (R)-Sitagliptin Methyl-Ester Impurity
   Request Quote
86350 (S)-Sitagliptin N-Boc-Acid Impurity
   Request Quote
86357 (R)-Sitagliptin N-Boc-Acid Impurity
   Request Quote
86351 (R)-Sitagliptin N-Boc-Methyl-Ester Impurity
   Request Quote
86377 Sitagliptin Styrylacetyl Analog
5 mg $590   Add to Cart
13490 SNC 80
Synonyms:
(+)-4-[(aR)-α-((2S,5R)-4-Allyl-2,5-dimethyl-1-piperazinyl)-3- methoxybenzyl]-N,N-diethylbenzamide;
10 mg $390   Add to Cart
50 mg $1,190   Add to Cart
37367 Sodium Salicylate
500 mg $707   Add to Cart
37368 Sodium Starch Glycolate Type A
400 mg $715   Add to Cart
37369 Sodium Starch Glycolate Type B
400 mg $715   Add to Cart
37370 Sodium Stearyl Fumarate
200 mg $715   Add to Cart
37371 Sodium Sulfate Anhydrous
1 g $715   Add to Cart
37372 Sodium Tartrate Dihydrate
500 mg/vial $603   Add to Cart
37373 Sodium Thiosulfate
1 g $715   Add to Cart
86313 Solifenacin
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37374 Somatropin
8.63 units/vial $733   Add to Cart
5524 Sophocarpine
0.25 g $1,500   Add to Cart
0.1 g $750   Add to Cart
5525 Sophoramine
Synonyms:
SOPHORAMINE96%;11,12,13,14-Tetradehydromatridin-15- one;Sophoramine;Matridin-15-one, 11,12,13,14-tetradehydro-;
0.1 g $750   Add to Cart
0.25 g $1,500   Add to Cart
5526 Sophoridine
0.25 g $1,500   Add to Cart
0.1 g $750   Add to Cart
13507 Sorafenib
Synonyms:
4-[4-[[[[4-Chloro-3-(trifluoromethyl)phenyl]amino]carbonyl]amino] phenoxy]-N-methyl-2-pyridinecarboxamide; BAY-43-9006; Sorafenib base;
5 mg $90   Add to Cart
25 mg $290   Add to Cart
5528 Sorafenib Tosylate
Synonyms:
Sorafenib, p-Toluenesulfonate Salt;
0.25 g $1,500   Add to Cart
0.1 g $750   Add to Cart
37375 Sorbic Acid
1 g $715   Add to Cart
37377 Sorbitol
125 mg $671   Add to Cart
37378 Sotalol HCl
300 mg $752   Add to Cart
37379 Sotalol Related Compound A
50 mg $1,171   Add to Cart
37380 Sotalol Related Compound B
50 mg $1,171   Add to Cart
37381 Sotalol Related Compound C
50 mg $1,171   Add to Cart
37383 Soybean Oil
1 g $715   Add to Cart
37384 SpectinomycinHCl
200 mg $715   Add to Cart
5529 Stavudine
Synonyms:
2Œ,3Œ-Didehydro-3Œ-deoxythymidine; d4T;
10 mg $550   Add to Cart
25 mg $990   Add to Cart
37387 Stavudine System Suitability Mixture
10 mg $1,171   Add to Cart
37388 Stearoyl Polyoxylglycerides
100 mg $715   Add to Cart
13568 Sucralfate
Synonyms:
Sucrose Octasulfate Aluminium Salt;
250 mg $190   Add to Cart
1 g $590   Add to Cart
37389 Sulfacetamide Sodium
500 mg $715   Add to Cart
37390 Sulfachloropyridazine
200 mg $715   Add to Cart
37391 Sulfadimethoxine
200 mg $715   Add to Cart
37392 Sulfamerazine
50 g $190   Add to Cart
37393 Sulfamethazine
25 g $290   Add to Cart
37394 Sulfamethizole
200 mg $715   Add to Cart
37395 Sulfamethoxazole
10 g $290   Add to Cart
37396 Sulfamethoxazole N4-glucoside
25 mg $1,171   Add to Cart
37397 Sulfamethoxazole Related Compound A
15 mg $1,171   Add to Cart
37398 Sulfamethoxazole Related Compound B
15 mg $1,171   Add to Cart
37399 Sulfamethoxazole Related Compound C
15 mg $1,171   Add to Cart
37400 Sulfamethoxazole Related Compound F
15 mg $1,171   Add to Cart
37401 Sulfanilamide
5 g $715   Add to Cart
37402 Sulfanilamide Melting Point Standard
1 g $603   Add to Cart
5625 2-sulfanylquinoline-3-carbaldehyde
50 mg    Request Quote
37403 Sulfapyridine Melting Point Standard
1 g $629   Add to Cart
38956 Bis(4-sulfobutyl)ether disodium
1 g $590   Add to Cart
5 g $1,890   Add to Cart
14251 Sulfociprofloxacin
5 mg $800   Add to Cart
5531 Tacedinaline
5 mg $575   Add to Cart
25 mg $1,500   Add to Cart
67111 Tachysterol3
Synonyms:
(1S)-3-[(1E)-2-[(1R,3aR,7aR)-1-[(1R)-1,5-Dimethylhexyl]-2,3,3a,6, 7,7a-hexahydro-7a-methyl-1H-inden-4-yl]ethenyl]-4-methyl-3- cyclohexen-1-ol; (3β,6E)-9,10-Secocholesta-5(10),6,8-trien-3- ol; Cholecalciferol impurity E;
   Request Quote
10248 Tacrolimus
Synonyms:
Advagraf; FR 900506; Fujimycin; L 679934; Prograf; Protopic; TacroBell; FK-506; Tsukubaenolide;
100 mg $190   Add to Cart
500 mg $590   Add to Cart
100178 Tagatosazine
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5532 Tamoxifen Citrate
0.25 g $1,500   Add to Cart
0.1 g $750   Add to Cart
86808 (R)-Tamsulosin
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5533 Tamsulosin HCl
10 mg $780   Add to Cart
37404 Tanshinone IIA
20 mg $735   Add to Cart
37405 Tartaric Acid
1 g $715   Add to Cart
37406 Taurine
100 mg $715   Add to Cart
5358 7-Epi-Taxol
0.1 g    Request Quote
0.5 g    Request Quote
5534 Tazobactam
1 g $790   Add to Cart
250 mg $240   Add to Cart
37407 Tazobactam Related Compound A
20 mg $1,171   Add to Cart
74360 TEG-carboxylate
25 mg $2,490   Add to Cart
50 mg $3,490   Add to Cart
14362 Telmisartan acyl glucuronide
5 mg $1,000   Add to Cart
37409 Telmisartan Related Compound A
20 mg $1,171   Add to Cart
37410 Telmisartan Related Compound B
15 mg $1,171   Add to Cart
37411 Temozolomide Related Compound A
15 mg $1,171   Add to Cart
37412 Temozolomide Related Compound B
15 mg $1,171   Add to Cart
37413 Temozolomide Related Compound C
15 mg $1,171   Add to Cart
108487 Teneligliptin
   Request Quote
5536 Teniposide
25 mg $750   Add to Cart
100 mg $1,500   Add to Cart
37358 Tenivastatin calcium monohydrate
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74362 Tenofovir Disoproxil
25 mg $1,545   Add to Cart
37414 Tenofovir Disoproxil Related Compound A
10 mg $1,171   Add to Cart
37415 Tenofovir Disoproxil Related Compound B
10 mg $1,171   Add to Cart
37416 Tenofovir Disoproxil Related Compound E
15 mg $1,171   Add to Cart
72499 α-Terpinenol
50 g $990   Add to Cart
10 g $290   Add to Cart
77218 2-(tert-Butylamino)-3’,5’-Dichloropropiophonone hydrochloride
Synonyms:
Bupropion related compound hydrochloride;
   Request Quote
77217 2-(tert-Butylamino)-3,4-dichloropropiophonone hydrochloride
Synonyms:
Bupropion related compound hydrochloride;
   Request Quote
36445 tert-Butylmethyl ether
1.2 mL/ampule $715   Add to Cart
37423 Tetracaine
50 mg $715   Add to Cart
37424 Tetracaine Related Compound B
25 mg $1,171   Add to Cart
37425 Tetracaine Related Compound C
25 mg $1,171   Add to Cart
84707 (6Z,9Z,12Z,15Z,18Z,21Z)-Tetracosahexaenoic acid
   Request Quote
84708 (9Z,12Z,15Z,18Z,21Z) Tetracosapentaenoic Acid
   Request Quote
87208 4-epi Tetracycline
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D88879 allo-3α-Tetrahydro cortisol-d7
Synonyms:
3&α;,5&α;,11 β)-3,11,17,21-Tetrahydroxypregnan-20- one-d7 ; 3&α;,11 β,17,21-Tetrahydroxy-5&α;-pregnan- 20-one-d7; 3&α;,5&α;-Tetrahydrocortisol-d7; 5&α;- Pregnane-3&α;,11 β,17&α;,21-tetraol-20-one-d7; 5&α;-Tetrahydrocortisol-d7; AL 3308-d7; ATHF-d7; Allotetrahydrocortisol-d7; NSC 86469-d7; &α;-THF-d7;;
0.5 mg $290   Add to Cart
2 mg $890   Add to Cart
O88883 allo-3α-Tetrahydro cortisol 3-O- β-D-glucuronide methyl ester
Synonyms:
(2S,3S,4S,5R,6R)-Methyl 6-(((3R,5S,8S,10S,11S,13S,14S,17R)-11,17- dihydroxy-17-(2-hydroxyacetyl)-10,13-dimethylhexadecahydro-1H- cyclopenta[a]phenanthren-3-yl)oxy)-3,4,5-trihydroxytetrahydro-2H- pyran-2-carboxylate;
0.5 mg $390   Add to Cart
2 mg $1,190   Add to Cart
O88880 allo-3α-Tetrahydro cortisol 3-O- β-D-glucuronide sodium salt
1 mg $290   Add to Cart
5 mg $890   Add to Cart
15812 Tetrahydro-2-methyl-3-thioxo-1,2,4-triazine-5,6-dione
Synonyms:
Thiotriazinone; Ceftriaxone impurity C;
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78563 8,13-Tetrahydrocopalic acid
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108643 (6S)-Tetrahydrofolic Acid
25 mg $290   Add to Cart
80702 (R)-Tetrahydrofuran-2-carbothioic S-acid
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5537 Tetrahydropalmatine
0.1 g $750   Add to Cart
0.25 g $1,500   Add to Cart
37427 TetrahydrozolineHCl
200 mg $715   Add to Cart
5057 3-Carboxy-2,2,5,5-tetramethyl-3-pyrrolin-1-yloxy, Free Radical
250 mg $850   Add to Cart
1 g $1,900   Add to Cart
76776 α1 , α1, α3, α3-Tetramethyl-5-(1H-1,2,4-triazol-1 -ylmethyl)-1,3-benzenediacetamide
Synonyms:
Anastrozole impurity; Anastrozole diamide;
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76775 α1 , α1, α3, α3-Tetramethyl-5-(1H-1,2,4-triazol-1 -ylmethyl)-1,3-benzenediacetic acid)
Synonyms:
Anastrozole impurity; Anastroloze diacid;
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5101 (-)-3-Carboxy-2,2,5,5-tetramethylpyrrolidinyl-1-oxy
Synonyms:
(-)-3-Carboxy-PROXYL;
5 mg $800   Add to Cart
25 mg $1,900   Add to Cart
37428 Theophylline Melting Point Standard
500 mg $629   Add to Cart
37429 Thiethylperazine Malate
200 mg $715   Add to Cart
37430 Thiethylperazine Maleate
200 mg $715   Add to Cart
37431 Thimerosal
500 mg $715   Add to Cart
13805 7α-Thiomethyl spironolactone
Synonyms:
7a-Thiomethylspirolactone; 7a-Thiomethyl-SL; 17a-Hydroxy-7a-(methylthio)-3-oxo-pregn-4-ene-21-carboxylic Acid Lactone; SC 26519;
1 mg $290   Add to Cart
5 Null $990   Add to Cart
CD86233 7α-Thiomethyl spironolactone-13C,d3
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37433 Thioridazine Related Compound F
20 mg $1,171   Add to Cart
74367 Thiorphan methoxy acetophenone
25 mg $3,490   Add to Cart
50 mg $5,490   Add to Cart
87057 Thiotepa Impurity 1
Synonyms:
Thiotepa EP Impurity A; N-Chloro Ethyl ThioTEPA;ThioTEPA Chloroethyl Analog; ThioTEPA Chloro Impurity; P,P-Bis(1- aziridinyl)-N-(2-chloroethyl)-phosphinothioic Amide; N,N’- Diethylene-N’’-2-chloroethyl Thiophosphoramide; N- (2-Chloroethyl)-P,P-bisaziridinyl Thiophosphamide;
   Request Quote
108497 Thromboxane B3
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5798 Tigecycline
10 mg $140   Add to Cart
100 mg $1,100   Add to Cart
86911 (R)-Tirofiban
5 mg $890   Add to Cart
37437 Tizanidine Related Compound C
50 mg $1,171   Add to Cart