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Tailor-made PEG Linkers
conjugate (ADC) development projects. All chemical linkers are of >95% purity standard.
IVD Material Development
including enzymes, carbohydrates, antigens, antibodies and custom biochemicals.
Development
ensure of a high success rate for custom synthesis.
of single or total impurities. And we always consider feasibility of scale-up production in lab trial.
Development
Recombinant Proteins
SARS-CoV-2 3CLpro/3C-like Protease Protein (Q189K), Accession : YP_009725301
SARS-CoV-2 3CLpro/3C-like Protease Protein (Q189K),YP_009725301,Ser1-Gln306(Q189K)
Biotinylated Human FGFR2 beta (IIIb) Domain Protein, Accession : P21802
Biotinylated Human FGFR2 beta (IIIb) Domain Protein,P21802,Pro253-Glu378
Recombinant Human DES1-3 Insulin-like Growth Factor 1 (rHuDES1-3IGF-1) CAS 105-012-1816
Recombinant Human DES1-3 Insulin-like Growth Factor 1,rHuDES1-3IGF-1,DES1-3 IGF-I, DES(1-3) IGF-I, IGF-I DES(1-3), DES1-3/Insulin-Like Growth factor 1,P05019,3479
Human IL-12 Protein, Accession : P29460
Human IL-12 Protein,P29460,Ile23-Ser328(IL-12B) & Arg23-Ser219(IL-12A)
Mouse NKp46/NCR1/CD335 Protein, Accession : Q8C567
Mouse NKp46/NCR1/CD335 Protein,Q8C567,Glu22-Asn255
Let's Overcome This Pandemic Together in 2022
Watson will go on working with our partners globally to fight against Covid-19,
and hope to overcome it completely in 2022.
APIs and Intermediates
Antibody/Antigen Rapid Test Kits
VTM Kit | GMP and FDA Approved
Polyethylene Glycol (PEG) Linkers
Nucleotides
Guanosine3′,5′-cyclicmonophosphatesodiumsalt CAS 40732-48-7
Guanosine3′,5′-cyclicmonophosphatesodiumsalt,40732-48-7,,C10H11N5NaO7P
N1-Me-pUTP 100mM Tris solution CAS NMPUTPT100
N1-Me-pUTP 100mM Tris solution,NMPUTPT100,Nucleotides
Uridine 5′-diphosphate disodium salt CAS 27821-45-0
Uridine 5′-diphosphate disodium salt,27821-45-0,5′-UDP,2Na ; UDP- Na2 ;
Uridine 5-diphosphoric acid disodium salt ;
Disodium1-{5-O-[hydroxy(phosphonatooxy)phosphoryl]-beta-D-glycero-pentofura
nosyl}pyrimidine-2,4(1H,3H)-dione;,C9H12N2Na2O12P2
Cytidine 5′-monophosphate disodium salt CAS 6757-06-8
Cytidine 5′-monophosphate disodium salt,6757-06-8,5′-CMP,2Na ; CMP-Na2 ;
Cytidine 5′-(disodium phosphate);
5′-Cytidylic acid, disodium salt ;
Disodium 5′-cytidilate ;
Disodium 5′-O-phosphonatocytidine,C9H12N3Na2O8P
Polyinosinic acid potassium salt CAS 26936-41-4
Polyinosinic acid potassium salt,26936-41-4,Poly I potassium salt,(C10H10O7N4PK)n
Impurity Reference Standards
- All
- Acotiamide
- Bendamustine
- Ceftriaxone
- Donepezil
- Mirtazapine
- Sunitinib
Mirtazapine EP Impurity D CAS 61337-68-6
Mirtazapine EP Impurity D,61337-68-6,Mirtazapine
Donepezil Related Compond-A CAS 145546-80-1
Donepezil Related Compond-A,145546-80-1,Donepezil
Bendamustine Impurity D CAS 97832-05-84
Bendamustine Impurity D,97832-05-84,Bendamustine
Ceftriaxone Impurity D(AE Active Ester, Ceftriaxone Sodium Intermediate) CAS 80765-85-0
Ceftriaxone Impurity D(AE Active Ester, Ceftriaxone Sodium Intermediate),80765-85-0,Ceftriaxone
Acotiamide Impurity 50 CAS 185106-16-550
Acotiamide Impurity 50,185106-16-550,Acotiamide
Prostaglandin
Travoprost CAS 157283-68-6
Identification Properties Safety Data Specifications & Other Information Links Quick Inquiry Identification CAS Number 157283-68-6 Name Travoprost Synonyms (+/-)-16-(M-TRIFLUOROMETHYLPHENOXY)TETRANORPROSTAGLANDIN F2 15(S)-FLU-IPR 15(S)-FLUPROSTENOL ISOPROPYL ESTER (+)-9ALPHA,11ALPHA,15R-TRIHYDROXY-16-(3-(TRIFLUOROMETHYL)PHENOXY)-17,18,19,20-TETRANOR-PROSTA-5Z,13E-DIEN-1-OIC ACID, ISOPROPYL ESTER 9ALPHA,11ALPHA,15S-TRIHYDROXY-16(3-(TRIFLUOROMETHYL)PHENOXY)-17,18,19,20-TETRANOR-PROSTA-5Z,13E-DIEN-1-OIC ACID, ISOPROPYL ESTER (+)-FLUPROSTENOL ISOPROPYL ESTER FLUPROSTENOL ISOPROPYL ESTER FLU-IPR 1-methylethyl (5Z)-7-[(1R,2R,3R,5S)-3,5-dihydroxy-2-{(1E,3R)-3-hydroxy-4-[3-(trifluoromethyl)phenoxy]but-1-en-1-yl}cyclopentyl]hept-5-enoate Travatan Travatan Z Molecular Structure SMILES FC(F)(F)c2cc(OC[C@H](O)/C=C/[C@@H]1[C@H]([C@@H](O)C[C@H]1O)C\C=C/CCCC(=O)OC(C)C)ccc2 StdInChI InChI=1S/C26H35F3O6/c1-17(2)35-25(33)11-6-4-3-5-10-21-22(24(32)15-23(21)31)13-12-19(30)16-34-20-9-7-8-18(14-20)26(27,28)29/h3,5,7-9,12-14,17,19,21-24,30-32H,4,6,10-11,15-16H2,1-2H3/b5-3-,13-12+/t19-,21-,22-,23+,24-/m1/s1 StdInChIKey MKPLKVHSHYCHOC-AHTXBMBWSA-N Molecular Formula C26H35F3O6 Molecular Weight 500.5477
D-Cloprostenol Sodium CAS 62561-03-9
(+)-Cloprostenol Sodium,62561-03-9,sodium (5Z)-7-{(1R,2R,3R,5S)-2-[(1E,3R)-4-(3-chlorophenoxy)-3-hydroxybut-1-en-1-yl]-3,5-dihydroxycyclopentyl}hept-5-enoate
(+)-Cloprostenol isopropyl ester CAS 157283-66-4
(+)-Cloprostenol isopropyl ester,157283-66-4,(+)-Cloprostenol isopropyl ester ;CPG 6112-95;5-Heptenoic acid,7-[(1R,2R,3R,5S)-2-[(1E,3R)-4-(3-chlorophenoxy)-3-hydroxy-1-butenyl]-3,5-dihydroxycyclopentyl]-, 1-methylethyl ester, (5Z)-;ISOPROPYL CLOPROSTENAT
Lubiprostone CAS 333963-40-9
Lubiprostone,333963-40-9,(2R,4aR,5R,7aR)-2-(1,1-Difluoropentyl)-2-hydroxy-6-oxo-3,4,4a,5,7,7a-hexahydrocyclopenta[b]pyran-5-heptanoicacid,C20H32F2O5
Catalysts and Ligands
Tris(Hydroxypropyl)Phosphine CAS 4706-17-6
Tris(Hydroxypropyl)Phosphine,4706-17-6,3,3¡¯,3¡¯¡¯-(Phosphinetriyl)Tris(1-Propanol);Tris(3-Hydroxypropyl)Phosphine,Min.80%;3,3¡¯,3¡¯¡¯-Phosphinetriyltris(1-Propanol),C9H21O3P
Bis[2-(diphenylphosphino)phenyl] Ether CAS 166330-10-5
(OXYDI-2,1-PHENYLENE)BIS(DIPHENYLPHOSPHINE),166330-10-5,,C36H28OP2
2-Diphenylphosphinobenzaldehyde CAS 50777-76-9
2-Diphenylphosphinobenzaldehyde,50777-76-9,2-(Diphenylphosphino)benzaldehyde
Dimethylphenylphosphine CAS 672-66-2
Dimethylphenylphosphine,672-66-2,PHOSPHORUS DIMETHYL PHENYL ;DIMETHYLPHENYLPHOSPHINE;Phenyldimethylphosphine;Phosphine, dimethylphenyl-;Dimethylphenylphosphine;Dimethylphenylphosphine;Dimethylphenylphosphine
Di-t-butylcyclohexylphosphine Tetrafluoroborate CAS 2143022-27-7
Identification CAS Number 2143022-27-7 Name Di-t-butylcyclohexylphosphine Tetrafluoroborate Synonyms Phosphine, cyclohexylbis(1,1-dimethylethyl)-, tetrafluoroborate(1-);Di-t-butylcyclohexylphosphine Tetrafluoroborate SMILES [B-](F)(F)(F)F.CC(C)(C)[PH+](C1CCCCC1)C(C)(C)C InChI InChI=1S/C14H29P.BF4/c1-13(2,3)15(14(4,5)6)12-10-8-7-9-11-12;2-1(3,4)5/h12H,7-11H2,1-6H3;/q;-1/p+1 InChI Key OWXBFXGXFMZBJV-UHFFFAOYSA-O Molecular Formula C14H30BF4P Molecular Weight 316.17 Properties Appearance White crystalline powder Safety Data RIDADR NONH for all modes of transport WGK Germany 3 Specifications and Other Information of Our Di-t-butylcyclohexylphosphine Tetrafluoroborate CAS 2143022-27-7 Identification Methods HNMR, HPLC
1,1’-Bis(dicyclohexylphosphino)ferrocene CAS 146960-90-9
Identification CAS Number 146960-90-9 Name 1,1′-BIS(DICYCLOHEXYLPHOSPHINO)FERROCENE Synonyms 146960-90-9 [RN]Dicyclohexyl(cyclopentyl)phosphin -eisen (2:1) [German] [ACD/IUPAC Name]Dicyclohexyl(cyclopentyl)phosphine – fer (2:1) [French] [ACD/IUPAC Name]Dicyclohexyl(cyclopentyl)phosphine – iron (2:1) [ACD/IUPAC Name]MFCD09038820 [MDL number]Phosphine, dicyclohexylcyclopentyl-, iron salt (2:1) [ACD/Index Name]1,1-Bis(Dicyclohexylphosphino)Ferrocene1,1′-BIS(DICYCLOHEXYLPHOSPHINO)FERROCENE [ACD/IUPAC Name]dCypf SMILES C1CCC(CC1)P(C2CCCCC2)C3CCCC3.C1CCC(CC1)P(C2CCCCC2)C3CCCC3.[Fe] StdInChI InChI=1S/2C17H31P.Fe/c21-3-9-15(10-4-1)18(17-13-7-8-14-17)16-11-5-2-6-12-16;/h215-17H,1-14H2 ; StdInChIKey IWYLGIFVMPKVOA-UHFFFAOYSA-N Molecular Formula C34H44FeP2 Molecular Weight 570.52 EINECS 623-251-3 MDL Number MFCD09038820 Properties Appearance Yellow solid
Silver Nanowire (Agnw) Development And Scaled Up
Silver nanowire (Agnw) developed by Polyberg, is widely used in Nanosilver Face Masks,
Air/Water Purifier and Silver Nanowire Touch Panels
ChemWhat Enzymes
Alpha1,3-N-acetylgalactosaminyltransferase ; Pm1138 CAS 124-1-40 E.C.: 2.4.1.40
Alpha1,3-N-acetylgalactosaminyltransferase ; Pm1138,124-1-40,E.C.: 2.4.1.40
Alpha1,3-galactosyltransferase ;GTB CAS 124-1-37 E.C.:2.4.1.37
Alpha1,3-galactosyltransferase ;GTB,124-1-37,E.C.:2.4.1.37
Alpha1,3-N-acetyl-galactosaminyltransferase;BgtA CAS 24-1-401 E.C.:2.4.1.40
Alpha1,3-N-acetyl-galactosaminyltransferase;BgtA,24-1-401,E.C.:2.4.1.40
Beta1,3-galactosyltransferase;WbgO CAS 124-1-86 E.C.:2.4.1.86
Beta1,3-galactosyltransferase;WbgO,124-1-86,E.C.:2.4.1.86
Alpha2,3-sialyltransferase;PhAlpha2.3SiaT CAS 2-4-994 E.C.:2.4.99.4
Alpha2,3-sialyltransferase;PhAlpha2.3SiaT,2-4-994,E.C.:2.4.99.4
Alpha1,2-fucosyltransferase ; a1,2FucT CAS 124-1-69 E.C.: 2.4.1.69
Alpha1,2-fucosyltransferase ; a1,2FucT,124-1-69,E.C.: 2.4.1.69
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UDP-Glc 4-epimerase (GalE)![]()
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Molecular weight![]()
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37kDa![]()
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Colorless liquid![]()
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Structure of UDP-Glc 4-epimerase (GalE) E.C. 5.1.3.2![]()
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Safety
UDP-Glc 4-epimerase (GalE) E.C.: 5.1.3.2
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Identification Properties Safety Data Specifications & Other Information Links Quick Inquiry Identification E.C. Number 5.1.3.2 - Identification![]()
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1010396-31-2![]()
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VNPB![]()
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-4,4'-diamine, N4,N4'-bis(4-ethenylphenyl)-N4,N4'-di-1-naphthalenyl- 1010396-31-2 MFCD27978272N,N'-Di(1-naphthyl)-N,N'-bis(4-vinylphenyl)-4,4'-biphenyldiamin N,N'-Di(1-naphthyl)-N,N'-bis(
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1010396-31-2,VNPB,N 4,N 4'-Di(naphthalen-1-yl)-N 4,N 4'-bis(4-vinylphenyl)biphenyl-4,4'-diamine - Identification![]()
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1010396-31-2![]()
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-4,4'-diamine, N4,N4'-bis(4-ethenylphenyl)-N4,N4'-di-1-naphthalenyl- 1010396-31-2 MFCD27978272N,N'-Di(1-naphthyl)-N,N'-bis(4-vinylphenyl)-4,4'-biphenyldiamin N,N'-Di(1-naphthyl)-N,N'-bis(
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1010396-31-2,VNPB,N 4,N 4'-Di(naphthalen-1-yl)-N 4,N 4'-bis(4-vinylphenyl)biphenyl-4,4'-diamine
Gold Nanoparticles
Semaglutide (910463-68-2): Revolutionizing Weight Loss Management
Watson's Leadership in Non-Natural Amino Acid Synthesis: Elevating Pharmaceutical Standards
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