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
4887 Ramiprilat, ammonium salt
5 mg $1,500   Add to Cart
10 mg $2,500   Add to Cart
85902 (S)-Ramosetron
   Request Quote
5509 Ranitidine
0.1 g $750   Add to Cart
0.25 g $1,500   Add to Cart
37294 Ranitidine Related Compound C
50 mg $1,171   Add to Cart
37293 Ranitidine Resolution Mixture
20 mg $2,341   Add to Cart
18758 Ranolazine
100 mg $290   Add to Cart
85697 Ranolazine N-oxide
1 mg $290   Add to Cart
10 mg $990   Add to Cart
37295 Ranolazine Related Compound A
50 mg $1,171   Add to Cart
37296 Ranolazine Related Compound B
50 mg $1,171   Add to Cart
37298 Ranolazine Related Compound D
50 mg $1,171   Add to Cart
13352 Rapamycin
Synonyms:
Sirolimus, RAPA, RPM;
100 mg $190   Add to Cart
500 mg $590   Add to Cart
85714 Rasagiline Related Compound HCl (3-Keto-N-Propargyl-1-Aminoindan)
Synonyms:
Rasagiline Related Compound 1 HCl;
   Request Quote
37299 Raspberry Alcohol
50 mg $715   Add to Cart
37300 Raspberry Ketone
100 mg $715   Add to Cart
37301 Rauwolfia Serpentina
15 g $715   Add to Cart
37303 Rebaudioside A
500 mg $865   Add to Cart
37304 Rebaudioside B
100 mg $865   Add to Cart
37305 Rebaudioside D
100 mg $865   Add to Cart
85504 (R,R)-Reboxetine
   Request Quote
D85505 (S,S)-Reboxetine-d5
   Request Quote
D85506 (R,R)-Reboxetine-d5
   Request Quote
14343 Repaglinide acyl glucuronide
5 mg $1,000   Add to Cart
37306 Repaglinide Related Compound A
10 mg $1,171   Add to Cart
37307 Repaglinide Related Compound B
50 mg $1,171   Add to Cart
37308 Repaglinide Related Compound C
25 mg $1,171   Add to Cart
37309 Repaglinide Related Compound E
20 mg $2,200   Add to Cart
37313 Residual Solvent Class 1 - 1,2-Dichloroethane
1.2 mL/ampule $715   Add to Cart
37311 Residual Solvent Class 1 - Benzene
1.2 mL/ampule $715   Add to Cart
37312 Residual Solvent Class 1 - Carbon Tetrachloride
1.2 mL/ampule $715   Add to Cart
37314 Residual Solvent Class 2 - Pyridine
1.2 mL/ampule $715   Add to Cart
37315 Residual Solvent Class 2 - Sulfolane
1.2 mL/ampule $715   Add to Cart
37316 Residual Solvent Class 2 - Tetrahydrofuran
1.2 mL/ampule $715   Add to Cart
37317 Residual Solvent Class 2 - Tetralin
1.2 mL/ampule $715   Add to Cart
37318 Residual Solvent Class 2 - Toluene
1.2 mL/ampule $715   Add to Cart
37319 Residual Solvent Class 2 - Trichloroethylene
1.2 mL/ampule $715   Add to Cart
37320 Residual Solvent Class 2 - Xylenes
1.2 mL/ampule $715   Add to Cart
37310 Residual Solvents Mixture - Class 1
1.2 mL/ampule $715   Add to Cart
5510 Resveratrol
Synonyms:
3,4’,5-Trihydroxy-trans-stilbene, 5-[(1E)-2-(4-Hydroxyphenyl) ethenyl]-1,3-benzenediol;
100 mg $550   Add to Cart
250 mg $900   Add to Cart
13373 trans Retinal
Synonyms:
all-trans-Vitamin A Aldehyde; Retinene; (all-E)-3,7-Dimethyl-9-(2,6,6-trimethyl-1-cyclohexen-1-yl)-2,4,6, 8-nonatetraenal;
25 mg $90   Add to Cart
5 Null $30   Add to Cart
72252 9-cis,13-cis-Retinoic Acid
Synonyms:
Tretinoin EP Impurity B;
1 mg $490   Add to Cart
5 mg $1,590   Add to Cart
86736 9-cis-Retinoic acid glucuronide
Synonyms:
Alitretinoin Glucuronide;
   Request Quote
13381 Retinoic acid methyl ester
5 mg $875   Add to Cart
25 mg $2,000   Add to Cart
CD76188 9-cis,13-cisRetinoic acid-13C,d3
   Request Quote
13383 9-cis-Retinol
Synonyms:
9-cis-Retinol; 9-cis-Vitamin A Alcohol;
5 mg $290   Add to Cart
25 mg $990   Add to Cart
37321 Retinyl Palmitate
200 mg $715   Add to Cart
D98872 9-cis-Retinyl-d5 linoleate
Synonyms:
9-cis-Retinol-d5 Linoleate;
   Request Quote
   Request Quote
37322 Rhodiola Rosea Root and Rhizome Dry Extract
1 g $715   Add to Cart
36834 rHuman Interleukin 4
51 ug $2,362   Add to Cart
5511 Ribavirin
Synonyms:
1-ß-D-Ribofuranosyl-1,2,4-triazole-3-carboxamide;
50 mg $95   Add to Cart
500 mg $400   Add to Cart
37323 Ribavirin Related Compound A
15 mg $1,171   Add to Cart
37324 Ribavirin Related Compound D
15 mg $1,171   Add to Cart
47094 Ribociclib succinate
Synonyms:
LEE011 succinate;
1 mg $190   Add to Cart
5 mg $590   Add to Cart
5388 L(+)-Ribose
1 g $325   Add to Cart
5 g $1,100   Add to Cart
37326 Rifampin Quinone
25 mg $1,171   Add to Cart
37327 Riluzole Related Compound A
25 mg $1,171   Add to Cart
5512 Rimonabant
0.25 g $1,500   Add to Cart
0.1 g $750   Add to Cart
85767 Ritonavir impurity B (Monoacyl Valine) Hydrochloride
   Request Quote
85777 Ritonavir Impurity G (Hydroperoxide Impurity)
   Request Quote
4888 Rivastigmine
   Request Quote
D85457 (R)-Rivastigmine (Rivastigmine EP Impurity D)
Synonyms:
(R)-Rivastigmine Impurity D;
   Request Quote
74345 Rivastigmine Metabolite
Synonyms:
NAP226-90;
   Request Quote
4889 Rivastigmine-3-(1-(dimethylamino)ethyl)phenol
5 mg $1,500   Add to Cart
10 mg $2,500   Add to Cart
14344 Rizatriptan N-oxide
25 mg $3,000   Add to Cart
5514 Rocuronium bromide
1 g $890   Add to Cart
37328 Ropinirole Related Compound B
50 mg $1,171   Add to Cart
52958 (S)-Ropivacaine N-isopropyl
   Request Quote
37329 Ropivacaine Related Compound A
25 mg $1,171   Add to Cart
37330 Ropivacaine Related Compound B
50 mg $1,171   Add to Cart
37333 Rosiglitazone Related Compound A
25 mg $1,171   Add to Cart
37334 Rosmarinic Acid
25 mg $715   Add to Cart
108726 Rosuvastatin
   Request Quote
85538 (3R,5R)-Rosuvastatin Methyl Ester
   Request Quote
85543 (3S,5R)-Rosuvastatin methyl ester
   Request Quote
85544 (3S,5S)-Rosuvastatin Methyl Ester
   Request Quote
85533 (3S,5R)-Rosuvastatin sodium salt
   Request Quote
85537 (3S,5S)-Rosuvastatin sodium salt
   Request Quote
37336 Rubusoside
100 mg $733   Add to Cart
37337 Rufinamide Related Compound A
25 mg $1,171   Add to Cart
37338 Rufinamide Related Compound B
25 mg $1,171   Add to Cart
5515 Rufloxacin HCl
0.1 g $750   Add to Cart
0.25 g $1,500   Add to Cart
5516 Rutin
0.25 g $1,500   Add to Cart
0.1 g $750   Add to Cart
85553 (S)-Ruxolitinib
   Request Quote
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
110382 L-Saccharopine
1 mg $290   Add to Cart
D86197 (2S, 4S)-Sacubitril-d4
   Request Quote
37342 Safflower Oil
1 g $715   Add to Cart
86457 (1S, 3R, 5S, 2S)-Saxagliptin
   Request Quote
86458 (1R, 3S, 5R, 2S)-Saxagliptin
   Request Quote
86459 (1S, 3S, 5S, 2R)-Saxagliptin
   Request Quote
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
   Request Quote
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
   Request Quote
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
   Request Quote
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
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
   Request Quote
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