Cysteine and derivatives

L-Cystine, 99%, Alfa Aesar™

CAS: 56-89-3 Molecular Formula: C6H12N2O4S2 Molecular Weight (g/mol): 240.292 MDL Number: MFCD00064228 InChI Key: LEVWYRKDKASIDU-IMJSIDKUSA-N Synonym: beta,beta'-dithiodialanine PubChem CID: 67678 ChEBI: CHEBI:16283 IUPAC Name: (2R)-2-amino-3-[[(2R)-2-amino-2-carboxyethyl]disulfanyl]propanoic acid SMILES: C(C(C(=O)O)N)SSCC(C(=O)O)N

L-Cysteine, 98+%, Alfa Aesar™

CAS: 52-90-4 Molecular Formula: C3H7NO2S Molecular Weight (g/mol): 121.154 MDL Number: MFCD00064306 InChI Key: XUJNEKJLAYXESH-REOHCLBHSA-N Synonym: 2r-2-amino-3-sulfanylpropanoic acid PubChem CID: 5862 ChEBI: CHEBI:17561 IUPAC Name: (2R)-2-amino-3-sulfanylpropanoic acid SMILES: C(C(C(=O)O)N)S

L-Cystine, 99%, ACROS Organics™

CAS: 56-89-3 Molecular Formula: C6H12N2O4S2 Molecular Weight (g/mol): 240.292 MDL Number: MFCD00064228 InChI Key: LEVWYRKDKASIDU-IMJSIDKUSA-N Synonym: beta,beta'-dithiodialanine PubChem CID: 67678 ChEBI: CHEBI:16283 IUPAC Name: (2R)-2-amino-3-[[(2R)-2-amino-2-carboxyethyl]disulfanyl]propanoic acid SMILES: C(C(C(=O)O)N)SSCC(C(=O)O)N

L-Cysteine Hydrochloride Monohydrate (White Crystals), Fisher BioReagents Available on GSA/VA Contract for Federal Government customers only.

CAS: 7048-04-6 Molecular Formula: C3H10ClNO3S Molecular Weight (g/mol): 175.63 InChI Key: QIJRTFXNRTXDIP-JIZZDEOASA-N Synonym: cysteine hcl PubChem CID: 23462 IUPAC Name: (2R)-2-amino-3-sulfanylpropanoic acid;hydrate;hydrochloride SMILES: C(C(C(=O)O)N)S.O.Cl

L-Cystine (White Crystals or Cryst. Powder), Fisher BioReagents

CAS: 56-89-3 Molecular Formula: C6H12N2O4S2 Molecular Weight (g/mol): 240.292 InChI Key: LEVWYRKDKASIDU-IMJSIDKUSA-N Synonym: beta,beta'-dithiodialanine PubChem CID: 67678 ChEBI: CHEBI:16283 IUPAC Name: (2R)-2-amino-3-[[(2R)-2-amino-2-carboxyethyl]disulfanyl]propanoic acid SMILES: C(C(C(=O)O)N)SSCC(C(=O)O)N

L-Cysteine hydrochloride monohydrate, 99%, Alfa Aesar™

CAS: 7048-04-6 Molecular Formula: C3H10ClNO3S Molecular Weight (g/mol): 175.63 MDL Number: MFCD00065606 InChI Key: QIJRTFXNRTXDIP-JIZZDEOASA-N Synonym: cysteine hcl PubChem CID: 23462 IUPAC Name: (2R)-2-amino-3-sulfanylpropanoic acid;hydrate;hydrochloride SMILES: C(C(C(=O)O)N)S.O.Cl

L-Cysteine, 99.5%, MP Biomedicals™

CAS: 52-90-4 Molecular Formula: C3H7NO2S Molecular Weight (g/mol): 121.154 InChI Key: XUJNEKJLAYXESH-REOHCLBHSA-N Synonym: 2r-2-amino-3-sulfanylpropanoic acid PubChem CID: 5862 ChEBI: CHEBI:17561 IUPAC Name: (2R)-2-amino-3-sulfanylpropanoic acid SMILES: C(C(C(=O)O)N)S

Thermo Scientific™ L-Cysteine Hydrochloride Monohydrate, 98.5 to 101.5% (Dry Basis), Thermo Scientific™

CAS: 7048-04-6 Molecular Formula: C3H10ClNO3S Molecular Weight (g/mol): 175.63 MDL Number: MFCD00065606 InChI Key: QIJRTFXNRTXDIP-JIZZDEOASA-N Synonym: cysteine hcl PubChem CID: 23462 IUPAC Name: (2R)-2-amino-3-sulfanylpropanoic acid;hydrate;hydrochloride SMILES: C(C(C(=O)O)N)S.O.Cl

L-Cysteine hydrochloride monohydrate, MP Biomedicals™

CAS: 7048-04-6 Molecular Formula: C3H10ClNO3S Molecular Weight (g/mol): 175.63 MDL Number: MFCD00065606 InChI Key: QIJRTFXNRTXDIP-JIZZDEOASA-N Synonym: cysteine hcl PubChem CID: 23462 IUPAC Name: (2R)-2-amino-3-sulfanylpropanoic acid;hydrate;hydrochloride SMILES: C(C(C(=O)O)N)S.O.Cl

L-Cystine, 99%, MP Biomedicals™

CAS: 56-89-3 Molecular Formula: C6H12N2O4S2 Molecular Weight (g/mol): 240.292 MDL Number: MFCD00064228 InChI Key: LEVWYRKDKASIDU-IMJSIDKUSA-N Synonym: beta,beta'-dithiodialanine PubChem CID: 67678 ChEBI: CHEBI:16283 IUPAC Name: (2R)-2-amino-3-[[(2R)-2-amino-2-carboxyethyl]disulfanyl]propanoic acid SMILES: C(C(C(=O)O)N)SSCC(C(=O)O)N

L-Cysteine [Free Base], MP Biomedicals

CAS: 52-90-4 Molecular Formula: C3H7NO2S Molecular Weight (g/mol): 121.154 InChI Key: XUJNEKJLAYXESH-REOHCLBHSA-N Synonym: 2r-2-amino-3-sulfanylpropanoic acid PubChem CID: 5862 ChEBI: CHEBI:17561 IUPAC Name: (2R)-2-amino-3-sulfanylpropanoic acid SMILES: C(C(C(=O)O)N)S

Alfa Aesar™ L-Cysteine hydrochloride, anhydrous, 98%

CAS: 52-89-1 Molecular Formula: C3H8ClNO2S Molecular Weight (g/mol): 157.612 MDL Number: MFCD00064553 InChI Key: IFQSXNOEEPCSLW-DKWTVANSSA-N Synonym: cystein chloride PubChem CID: 60960 IUPAC Name: (2R)-2-amino-3-sulfanylpropanoic acid;hydrochloride SMILES: C(C(C(=O)O)N)S.Cl

MilliporeSigma™ L-Cysteine, Hydrochloride, >98%, Calbiochem™,

CAS: 52-89-1 Molecular Formula: C3H8ClNO2S Molecular Weight (g/mol): 157.612 InChI Key: IFQSXNOEEPCSLW-DKWTVANSSA-N Synonym: cystein chloride PubChem CID: 60960 IUPAC Name: (2R)-2-amino-3-sulfanylpropanoic acid;hydrochloride SMILES: C(C(C(=O)O)N)S.Cl

Alfa Aesar™ D-Cysteine, 98%

CAS: 921-01-7 Molecular Formula: C3H7NO2S Molecular Weight (g/mol): 121.154 MDL Number: MFCD00066461 InChI Key: XUJNEKJLAYXESH-UWTATZPHSA-N Synonym: 2s-2-amino-3-sulfanylpropanoic acid PubChem CID: 92851 ChEBI: CHEBI:16375 IUPAC Name: (2S)-2-amino-3-sulfanylpropanoic acid SMILES: C(C(C(=O)O)N)S

Alfa Aesar™ N-Boc-S-tert-butyl-L-cysteine, 98%

CAS: 56976-06-8 Molecular Formula: C12H23NO4S Molecular Weight (g/mol): 277.379 MDL Number: MFCD00076918 InChI Key: OGARKMDCQCLMCS-QMMMGPOBSA-N Synonym: 2r-2-tert-butoxycarbonyl amino-3-tert-butylsulfanyl propanoic acid PubChem CID: 11288930 IUPAC Name: (2R)-3-tert-butylsulfanyl-2-[(2-methylpropan-2-yl)oxycarbonylamino]propanoic acid SMILES: CC(C)(C)OC(=O)NC(CSC(C)(C)C)C(=O)O

Alfa Aesar™ L-Cysteine, Cell Culture Reagent

CAS: 52-90-4 Molecular Formula: C3H7NO2S Molecular Weight (g/mol): 121.154 MDL Number: MFCD00064306 InChI Key: XUJNEKJLAYXESH-REOHCLBHSA-N Synonym: 2r-2-amino-3-sulfanylpropanoic acid PubChem CID: 5862 ChEBI: CHEBI:17561 IUPAC Name: (2R)-2-amino-3-sulfanylpropanoic acid SMILES: C(C(C(=O)O)N)S

Alfa Aesar™ S-Benzyl-L-cysteine, 99%

CAS: 3054-01-1 Molecular Formula: C10H13NO2S Molecular Weight (g/mol): 211.28 MDL Number: MFCD00002613 InChI Key: GHBAYRBVXCRIHT-UHFFFAOYNA-N Synonym: 3-benzylthioalanine PubChem CID: 193613 ChEBI: CHEBI:41085 IUPAC Name: (2R)-2-amino-3-benzylsulfanylpropanoic acid SMILES: C1=CC=C(C=C1)CSCC(C(=O)O)N

Alfa Aesar™ DL-Cysteine, 96%

CAS: 3374-22-9 Molecular Formula: C3H7NO2S Molecular Weight (g/mol): 121.154 MDL Number: MFCD00004881 InChI Key: XUJNEKJLAYXESH-UHFFFAOYSA-N Synonym: +--cysteine PubChem CID: 594 ChEBI: CHEBI:15356 IUPAC Name: 2-amino-3-sulfanylpropanoic acid SMILES: C(C(C(=O)O)N)S

Alfa Aesar™ L-Cystine dihydrochloride, 99%

CAS: 30925-07-6 Molecular Formula: C6H14Cl2N2O4S2 Molecular Weight (g/mol): 313.208 MDL Number: MFCD00070399 InChI Key: HHGZUQPEIHGQST-RGVONZFCSA-N Synonym: 2r-2-amino-3-2r-2-amino-2-carboxyethyl disulfanyl propanoic acid dihydrochloride PubChem CID: 21121987 IUPAC Name: (2R)-2-amino-3-[[(2R)-2-amino-2-carboxyethyl]disulfanyl]propanoic acid;dihydrochloride SMILES: C(C(C(=O)O)N)SSCC(C(=O)O)N.Cl.Cl

L-Cysteine hydrochloride, 98%, anhydrous, ACROS Organics™

CAS: 52-89-1 Molecular Formula: C3H7NO2S·HCl Molecular Weight (g/mol): 157.61 InChI Key: IFQSXNOEEPCSLW-DKWTVANSSA-N Synonym: cystein chloride PubChem CID: 60960 IUPAC Name: (2R)-2-amino-3-sulfanylpropanoic acid;hydrochloride SMILES: C(C(C(=O)O)N)S.Cl

L-(+)-Cysteine Hydrochloride Monohydrate (Reagent), Fisher Chemical

CAS: 7048-04-6 Molecular Formula: C3H10ClNO3S Molecular Weight (g/mol): 175.63 InChI Key: QIJRTFXNRTXDIP-JIZZDEOASA-N Synonym: cysteine hcl PubChem CID: 23462 IUPAC Name: (2R)-2-amino-3-sulfanylpropanoic acid;hydrate;hydrochloride SMILES: C(C(C(=O)O)N)S.O.Cl

Alfa Aesar™ L-Cystine disodium salt monohydrate, 98+%

CAS: 199329-53-8 Molecular Formula: C6H12N2Na2O5S2 Molecular Weight (g/mol): 302.271 MDL Number: MFCD00243291 InChI Key: TVPDKJXPEMKMDM-BLZBDRIDSA-L Synonym: c6h10n2o4s2.2na.h2o PubChem CID: 71299670 IUPAC Name: disodium;(2R)-2-amino-3-[[(2R)-2-amino-2-carboxylatoethyl]disulfanyl]propanoate;hydrate SMILES: C(C(C(=O)[O-])N)SSCC(C(=O)[O-])N.O.[Na+].[Na+]

L-(-)-Cystine 98.0+%, TCI America™

CAS: 56-89-3 Molecular Formula: C6H12N2O4S2 Molecular Weight (g/mol): 240.292 MDL Number: MFCD00064228 InChI Key: LEVWYRKDKASIDU-IMJSIDKUSA-N Synonym: beta,beta'-dithiodialanine PubChem CID: 67678 ChEBI: CHEBI:16283 IUPAC Name: (2R)-2-amino-3-[[(2R)-2-amino-2-carboxyethyl]disulfanyl]propanoic acid SMILES: C(C(C(=O)O)N)SSCC(C(=O)O)N

S-(2-Carboxyethyl)-L-cysteine 98.0+%, TCI America™

CAS: 4033-46-9 Molecular Formula: C6H11NO4S Molecular Weight (g/mol): 193.217 MDL Number: MFCD03424208 InChI Key: FBPINGSGHKXIQA-BYPYZUCNSA-N Synonym: 3-[(2-Carboxyethyl)thio]alanine PubChem CID: 23618202 IUPAC Name: (2R)-2-amino-3-(2-carboxyethylsulfanyl)propanoic acid SMILES: C(CSCC(C(=O)O)N)C(=O)O

S-Methyl-L-cysteine 98.0+%, TCI America™

CAS: 1187-84-4 Molecular Formula: C4H9NO2S Molecular Weight (g/mol): 135.181 MDL Number: MFCD00002612 InChI Key: IDIDJDIHTAOVLG-VKHMYHEASA-N Synonym: ccris 1972 PubChem CID: 24417 ChEBI: CHEBI:45658 IUPAC Name: (2R)-2-amino-3-methylsulfanylpropanoic acid SMILES: CSCC(C(=O)O)N

L-Cysteine Hydrochloride Monohydrate, MP Biomedicals

CAS: 7048-04-6 Molecular Formula: C3H10ClNO3S Molecular Weight (g/mol): 175.63 MDL Number: MFCD00065606 InChI Key: QIJRTFXNRTXDIP-JIZZDEOASA-N Synonym: cysteine hcl PubChem CID: 23462 IUPAC Name: (2R)-2-amino-3-sulfanylpropanoic acid;hydrate;hydrochloride SMILES: C(C(C(=O)O)N)S.O.Cl

Alfa Aesar™ S-tert-Butyl-L-cysteine hydrochloride, 98%

CAS: 2481-09-6 Molecular Formula: C7H16ClNO2S Molecular Weight (g/mol): 213.72 MDL Number: MFCD00037426 InChI Key: MHBMYFJKEBCMDR-JEDNCBNOSA-N Synonym: 2r-2-amino-3-tert-butylsulfanyl propanoic acid hydrochloride PubChem CID: 17750295 IUPAC Name: (2R)-2-amino-3-tert-butylsulfanylpropanoic acid;hydrochloride SMILES: CC(C)(C)SCC(C(=O)O)N.Cl

D-Cysteine hydrochloride monohydrate, 98%, ACROS Organics™

CAS: 207121-46-8 Molecular Formula: C3H10ClNO3S Molecular Weight (g/mol): 175.627 MDL Number: MFCD00150051 InChI Key: QIJRTFXNRTXDIP-YBBRRFGFSA-N Synonym: c3h7no2s.hcl.h2o PubChem CID: 10176341 IUPAC Name: (2S)-2-amino-3-sulfanylpropanoic acid;hydrate;hydrochloride SMILES: C(C(C(=O)O)N)S.O.Cl

Alfa Aesar™ S-Acetamidomethyl-L-cysteine hydrochloride, 98%

CAS: 28798-28-9 Molecular Formula: C6H13ClN2O3S Molecular Weight (g/mol): 228.691 MDL Number: MFCD00077080 InChI Key: SZWPOAKLKGUXDD-JEDNCBNOSA-N Synonym: 2r-2-amino-3-acetamidomethyl sulfanyl propanoic acid hydrochloride PubChem CID: 16211002 IUPAC Name: (2R)-3-(acetamidomethylsulfanyl)-2-aminopropanoic acid;hydrochloride SMILES: CC(=O)NCSCC(C(=O)O)N.Cl

Alfa Aesar™ 5-Chloro-2-methoxybenzaldehyde, 97%

CAS: 7048-04-6 Molecular Formula: C3H10ClNO3S Molecular Weight (g/mol): 175.63 MDL Number: MFCD00033854 InChI Key: QIJRTFXNRTXDIP-JIZZDEOASA-N Synonym: cysteine hcl PubChem CID: 23462 IUPAC Name: (2R)-2-amino-3-sulfanylpropanoic acid;hydrate;hydrochloride SMILES: C(C(C(=O)O)N)S.O.Cl

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