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
4966 N-[4-(-Carboxycyclohexylmethyl)]maleimide
Synonyms:
(1-(4-Chlorophenyl)-1-[3-(dimethylamino)propyl)-1,3-dihydro-5- isobenzofuran-5-carbonitrile, Hydrobromide);
20 mg $850   Add to Cart
100 mg $1,900   Add to Cart
5085 2-Carboxyethyl Methanethiosulfonate
100 mg $800   Add to Cart
500 mg $1,900   Add to Cart
103218 2-Carboxyethyl phenyl phosphinic acid
Synonyms:
CEPPA;
250 g $90   Add to Cart
1 kg $288   Add to Cart
4970 (2-Carboxyethyl)-triphenylphosphonium Chloride
Synonyms:
((2-Carboxy-ethyl)-triphenyl-phosphonium Chloride);
10 g $1,900   Add to Cart
2 g $850   Add to Cart
81699 6-4-(1-Carboxyethyl)phenyl]-5-oxohexanoic acid
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81698 6-[4-(1-Carboxyethyl)phenyl]-6-oxohexanoic acid
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5095 5(6)-Carboxyfluorescein
5 g $800   Add to Cart
25 g $1,900   Add to Cart
5118 5-Carboxyfluorescein
100 mg $700   Add to Cart
500 mg $1,700   Add to Cart
4997 5-Carboxyfluorescein-N-hydroxysuccinimide Ester
1 g $1,450   Add to Cart
10 g $3,200   Add to Cart
4979 6-Carboxyhexylphosphocholine p-Nitrophenyl Ester
10 mg $900   Add to Cart
50 mg $2,000   Add to Cart
83686 Carboxylate ion of nystatin
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4993 Carboxymefloquine
Synonyms:
(2,8-Bis(trifluoromethyl)-4-quinolinecarboxylic Acid);
5 mg $900   Add to Cart
25 mg $2,000   Add to Cart
91187 2-(4-(2-(4-(Carboxymethoxy)-2,3-dichlorobenzoyl)-2,5-diethyl-3,4- dihydro-2H-pyran-6-yl)-2,3-dichlorophenoxy)acetic Acid
Synonyms:
Ethacrynic Impurity C; [4-[2-(&α;-Carboxy-2,3-dichloro-p- anisoyl)-2,5-diethyl-3,4-dihydro-2H-pyran-6-yl]-2,3- dichlorophenoxy]acetic Acid;
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5041 Carboxymethyl Methanethiosulfonate
10 g $850   Add to Cart
50 g $1,800   Add to Cart
103503 N-(Carboxymethyl)-N-(phosphonomethyl)-glycine
500 mg $190   Add to Cart
2 g $608   Add to Cart
103162 (R)-2-(Carboxymethyl)pyrrolidinium chloride
Synonyms:
(R)-2-(Pyrrolidinyl)acetic acid HCl;
2 g $790   Add to Cart
10 g $1,200   Add to Cart
O106530 2-O-Carboxymethyl-D-glucose
10 mg $1,275   Add to Cart
50 mg $2,250   Add to Cart
36467 Carboxymethylcellulose Calcium
1.5 g $715   Add to Cart
36468 Carboxymethylcellulose Sodium
1.5 g $715   Add to Cart
5040 (Carboxymethyloximino)spiperone, Hemihydrate
10 g $850   Add to Cart
50 g $1,800   Add to Cart
103260 1-Carboxypentyl-2-3-3-trimethylindolenium-5-sulfate- potassium salt
Synonyms:
1-(5-Carboxypentyl)-2-3-3-trimethyl-5-sulfo-3H-indolium potassium salt;
100 mg $290   Add to Cart
500 mg $928   Add to Cart
4991 N-5-Carboxypentyl-deoxymannojirimycin
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103121 N-(2-Carboxyphenyl)pyrrole
1 g $190   Add to Cart
5 g $608   Add to Cart
103233 3-Carboxyphenylboronic acid
25 g $90   Add to Cart
100 g $288   Add to Cart
5013 Carboxyterbinafine
1 mg $900   Add to Cart
5 mg $2,000   Add to Cart
4973 6-Carboxytetramethylrhodamine
Synonyms:
6-TAMRA;
50 mg $2,000   Add to Cart
10 mg $900   Add to Cart
4974 5-Carboxytetramethylrhodamine
Synonyms:
5-TAMRA;
10 mg $900   Add to Cart
50 mg $2,000   Add to Cart
101357 3-Carboxyumbelliferyl β-D-galactopyranoside
Synonyms:
Carboxyumbelliferyl b-D-galactoside;
2 mg $290   Add to Cart
10 mg $928   Add to Cart
101358 3-Carboxyumbelliferyl β-D-glucuronide
1 mg $90   Add to Cart
5 mg $288   Add to Cart
107598 E-5-(2-Carboxyvinyl)-2’-deoxyuridine
Synonyms:
E-5-(2-Carboxyvinyl)-2’-deoxy-D-uridine;
100 mg $190   Add to Cart
500 mg $608   Add to Cart
107606 E-5-(2-Carboxyvinyl)-2’-deoxyuridine hydroxysuccinimide ester
100 mg $290   Add to Cart
500 mg $928   Add to Cart
103095 E-5-(2-Carboxyvinyl)-2-4-dimethoxypyrimidine
250 mg $190   Add to Cart
1 g $608   Add to Cart
78122 Carbuterol
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103262 Carbuterol hydrochloride
Synonyms:
Carbuterol hydrochloride;
5 mg $290   Add to Cart
25 mg $928   Add to Cart
109927 (1S)-(+)-3-Carene
Synonyms:
3-Carene, (1S,6R)-(+)- (8CI); (S)-(+)-3-Carene; Bicyclo[4.1.0] hept-3-ene, 3,7,7-trimethyl-, (1S,6R)-; (+)-?3-Carene; (1S)-(+)-3 -Carene; (1S,6R)-3,7,7-Trimethylbicyclo[4.1.0]hept-3-ene; Isodiprene; Bicyclo[4.1.0]hept-3-ene, 3,7,7-trimethyl-, (1S)-; (+ )-Ca...;
1 ml $64   Add to Cart
78102 Carfilzomib impurity 1
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78111 Carfilzomib impurity 10
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78112 Carfilzomib impurity 11
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78113 Carfilzomib impurity 12
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78103 Carfilzomib impurity 2
Synonyms:
Carfilzomib (2R,4S)-diol;
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78104 Carfilzomib impurity 3
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78105 Carfilzomib impurity 4
Synonyms:
N-Oxide impurity;
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78106 Carfilzomib impurity 5
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78107 Carfilzomib impurity 6
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78108 Carfilzomib impurity 7
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78109 Carfilzomib impurity 8
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78110 Carfilzomib impurity 9
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78221 Carglumic acid impurity B
5 mg $690   Add to Cart
78916 Carisbamate glucuronide
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16824 Carisoprodol
50 mg $90   Add to Cart
250 mg $290   Add to Cart
C78913 Carisoprodol impurity C
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78914 Carisoprodol isopropyl impurity
Synonyms:
Isopropylcarbamic acid 2-methyl-2-propyltrimethylene ester;
50 mg $290   Add to Cart
250 mg $990   Add to Cart
5084 Carmustine
Synonyms:
1,3-Bis(2-chloroethyl)-1-nitrosourea; BCNU;
100 mg $800   Add to Cart
500 mg $1,900   Add to Cart
5296 DL-Carnitine Chloride
25 g $225   Add to Cart
77875 Caroverine hydrochloride
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78898 Carprofen impurity 1
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108883 Carpropamid
100 mg $170   Add to Cart
78566 Carquejol
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108074 l-Carrageenan
Synonyms:
lambda-Carrageenan;
5 g $190   Add to Cart
25 g $608   Add to Cart
110227 Cartap 100 µg/mL in Methanol
1 ml $68   Add to Cart
78395 Cartap hydrochloride
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108884 CartapHCl
100 mg $248   Add to Cart
D78326 Carteolol hydrochloride EP impurity D
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78327 Carteolol hydrochloride EP impurity E
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78328 Carteolol hydrochloride EP impurity F
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78329 Carteolol hydrochloride EP impurity G
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78330 Carteolol hydrochloride EP impurity I
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78325 Carteolol impurity H hydrochloride
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5147 (S)-(-)-Carvedilol
5 mg $900   Add to Cart
25 mg $2,200   Add to Cart
77771 Carvedilol bisalkylpyrocatechol derivative
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77780 Carvedilol impurity 1
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77781 Carvedilol impurity 2
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77766 Carvedilol impurity A
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77767 Carvedilol impurity B
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C77768 Carvedilol impurity C
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D77770 Carvedilol impurity D
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77772 Carvedilol related compound F
Synonyms:
6,7,8,9-Tetrahydro carvedilol;
2 mg $190   Add to Cart
5 mg $590   Add to Cart
D77784 (S)-(-)-Carvedilol-d4
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108885 Carvone
250 mg $98   Add to Cart
106716 6-Epi-castanospermine
1 mg $290   Add to Cart
5 mg $928   Add to Cart
106529 (+)-Casuarine
1 mg $1,250   Add to Cart
5 mg $2,425   Add to Cart
106512 Catalposide
Synonyms:
Hydroxybenzoyl catalpol;
1 mg $390   Add to Cart
5 mg $1,248   Add to Cart
85094 Catechol
Synonyms:
Pyrocatechol;
1 g $90   Add to Cart
5 g $290   Add to Cart
103140 Catechol Violet
Synonyms:
Pyrocatechol violet;
10 g $90   Add to Cart
50 g $288   Add to Cart
103526 N-Cbz-1-3-Diaminopropane hydrochloride
1 g $190   Add to Cart
5 g $608   Add to Cart
103539 (R)-1-Cbz-3-Aminopyrrolidine hydrochloride
500 mg $90   Add to Cart
2 g $288   Add to Cart
103561 1-Cbz-3-hydroxyazetidine
Synonyms:
Benzyl 3-hydroxyazetidine-1-carboxylate;
25 g $90   Add to Cart
100 g $288   Add to Cart
103363 N-Cbz-3-pyrrolidinone
5 g $290   Add to Cart
25 g $928   Add to Cart
103502 (CBZ-Cys-OH)2
5 g $90   Add to Cart
25 g $288   Add to Cart
103549 Cbz-D-(-)-Phenylglycine
2 g $190   Add to Cart
10 g $608   Add to Cart
103454 N-Cbz-glycine 4-nitrophenyl ester
25 g $190   Add to Cart
100 g $608   Add to Cart
103439 Cbz-glycine hydrazide
250 mg $443   Add to Cart
1 g $770   Add to Cart
103451 Cbz-glycine methyl ester
5 g $190   Add to Cart
25 g $608   Add to Cart
103329 N-Cbz-L-alanine L-carboxyanhydride
Synonyms:
N-Benzyloxycarbonyl-L-alanine L-carboxyanhydride;
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O103235 N-Cbz-O-benzyl-γ-L-glutamyl-S-benzyl-L-cysteinyl-glycine benzyl ester
Synonyms:
N-[N-[N-[(Phenylmethoxy)carbonyl]-L-γ-glutamyl]-S- (phenylmethyl)-L-cysteinyl]glycine bis(phenylmethyl) ester;
5 mg $290   Add to Cart
25 mg $928   Add to Cart
103564 N-Cbz-piperidine-3-carboxylic acid
1 g $190   Add to Cart
5 g $608   Add to Cart
103394 Cbz-Ser(bzl)-OH
10 g $190   Add to Cart
50 g $608   Add to Cart
78046 Cedinir isoxazole analog
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108502 Δ-3 Cefaclor
Synonyms:
Cefaclor EP Impurity D;
20 mg $390   Add to Cart
78931 Cefaclor delta-3-Isomer
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78933 Cefaclor EP impurity G
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78934 Cefaclor EP impurity H
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78932 Cefaclor impurity C
Synonyms:
(7S)-Cefaclor;
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78930 Cefaclor impurity E
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101218 Cefadroxil
1 g $90   Add to Cart
5 g $288   Add to Cart
78203 Cefadroxil impurity B
Synonyms:
7-ADCA;
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78204 Cefadroxil impurity E
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78205 Cefadroxil impurity J
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C78207 Cefadroxil monohydrate EP impurity C
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36471 Cefadroxil Related Compound D
25 mg $1,171   Add to Cart
36472 Cefadroxil Related Compound I
25 mg $1,171   Add to Cart
36469 Cefadroxil System Suitability Mixture
25 mg $1,171   Add to Cart
108504 Cefalexin
1 g $190   Add to Cart
78219 Cefalexin impurity
Synonyms:
3-Aminomethylene-6-phenylpiperazine-2,5-dione;
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78608 Cefalonium
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78390 Cefamandole dimer impurity
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78391 Cefamandole impurity 1
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78392 Cefamandole impurity 2
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78393 Cefamandole impurity 3
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78394 Cefamandole impurity 4
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78386 Cefamandole impurity A
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C78387 Cefamandole impurity C sodium salt
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D78388 Cefamandole impurity D
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78389 Cefamandole impurity E
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36473 Cefamandole Lithium
200 mg $715   Add to Cart
36474 Cefamandole Nafate
250 mg $715   Add to Cart
78081 Cefathiamidine impurity
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C78082 Cefathiamidine impurity C
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78079 Cefathiamidine lactone
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77988 Cefazedone amide
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77975 Cefazedone impurity 1
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77984 Cefazedone impurity 10
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77990 Cefazedone impurity 14
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77976 Cefazedone impurity 2
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77977 Cefazedone impurity 3
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77978 Cefazedone impurity 4
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77979 Cefazedone impurity 5
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77980 Cefazedone impurity 6
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77981 Cefazedone impurity 7
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77982 Cefazedone impurity 8
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77983 Cefazedone impurity 9
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77989 Cefazedone lactone
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36476 Cefazolin
200 mg $715   Add to Cart
79134 Cefazolin 3-hydroxymethyl impurity
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79141 Cefazolin delta-3 impurity
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79135 Cefazolin delta-4 impurity
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79133 Cefazolin EP impurity C
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D79132 Cefazolin EP impurity D sodium salt
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79147 Cefazolin EP impurity G
Synonyms:
Cefazolin lactone;
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79130 Cefazolin impurity
Synonyms:
1H-Tetrazole-1-acetic acid;
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