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ChemicalBook >> CAS DataBase List >> Methyldopa

Methyldopa

$18 - $630
Product name: Methyldopa
CAS: 555-30-6
MF: C10H13NO4
MW: 211.22
EINECS:209-089-2
MDL Number:MFCD00004186
Synonyms:Methyldopa (EDMF/COS);L-A-METHYL DOPA MK-351, METHYLDOPA;MethyldopaUsp28/Bp2003/Ep5;3-Hydroxy-α-methyl-L-tyrosine;L-Tyrosine, 3-hydroxy-.alpha.-methyl-;2-METHYL-3-(3,4-DIHYDROXYPHENYL)ALANINE;(2S)-2-Amino-3-(3,4-dihydroxyphenyl)-2-methylpropanoic acid;3-(3,4-Dihydroxyphenyl)-α-methyl-L-alanine

Price50 Properties Safety Information Description

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Brand

aablocks
AHH
AK Scientific
ApexBio Technology
Arctom
Biorbyt Ltd
Biosynth
Cayman Chemical
Chemenu
Chem-Impex
ChemScene
Crysdot
Labseeker
TCI Chemical
TRC
Usbiological

Package

5mg
10mg
50mg
100mg
200mg
1mlx10mM(inDMSO)
500mg
1g
2g
5g
10g
25g
50g
100g
500g

Manufactureraablocks
Product numberAA003RA4
Product description(S)-2-Amino-3-(3,4-Dihydroxyphenyl)-2-Methylpropanoic Acid 97%
Packaging5g
Price$18
Updated2026-05-28
Buy

Manufactureraablocks
Product numberAA003RA4
Product description(S)-2-Amino-3-(3,4-Dihydroxyphenyl)-2-Methylpropanoic Acid 97%
Packaging25g
Price$28
Updated2026-05-28
Buy

Manufactureraablocks
Product numberAA003RA4
Product description(S)-2-Amino-3-(3,4-Dihydroxyphenyl)-2-Methylpropanoic Acid 97%
Packaging100g
Price$78
Updated2026-05-28
Buy

Manufactureraablocks
Product numberAA003RA4
Product description(S)-2-Amino-3-(3,4-Dihydroxyphenyl)-2-Methylpropanoic Acid 97%
Packaging500g
Price$272
Updated2026-05-28
Buy

ManufacturerAHH
Product numberAPI-1546
Product descriptionMethyldopa 98%
Packaging500g
Price$630
Updated2021-12-16
Buy

ManufacturerAHH
Product numberAPI-1546
Product descriptionMethyldopa 97%
Packaging500g
Price$630
Updated2026-05-26
Buy

ManufacturerAK Scientific
Product numberH155
Product description3-(3,4-Dihydroxyphenyl)-2-methyl-L-alanine Sesquihydrate
Packaging100g
Price$321
Updated2021-12-16
Buy

ManufacturerAK Scientific
Product numberJ56043
Product description3-(3,4-Dihydroxyphenyl)-2-methyl-L-alanine Sesquihydrate
Packaging100g
Price$240
Updated2021-12-16
Buy

ManufacturerAK Scientific
Product numberH155
Product description3-(3,4-Dihydroxyphenyl)-2-methyl-L-alanine Sesquihydrate
Packaging25g
Price$107
Updated2021-12-16
Buy

ManufacturerAK Scientific
Product numberJ56043
Product description3-(3,4-Dihydroxyphenyl)-2-methyl-L-alanine Sesquihydrate
Packaging25g
Price$80
Updated2021-12-16
Buy

ManufacturerApexBio Technology
Product numberB1787
Product descriptionMethyldopa
Packaging50mg
Price$68
Updated2021-12-16
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ManufacturerApexBio Technology
Product numberB1787
Product descriptionMethyldopa
Packaging50mg
Price$50
Updated2026-05-06
Buy

ManufacturerArctom
Product numberSY057913
Product description3-(3,4-Dihydroxyphenyl)-2-methyl-L-alanine Sesquihydrate
Packaging10mg
Price$49.09
Updated2021-12-16
Buy

ManufacturerBiorbyt Ltd
Product numberorb1224680
Product descriptionL-(-)-α-Methyldopa >98%(HPLC)
Packaging100mg
Price$70
Updated2026-05-06
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ManufacturerBiorbyt Ltd
Product numberorb1310547
Product descriptionMethyldopa 99.89%(Mayvarybetweenbatches)
Packaging100mg
Price$70
Updated2026-05-06
Buy

ManufacturerBiorbyt Ltd
Product numberorb1224680
Product descriptionL-(-)-α-Methyldopa >98%(HPLC)
Packaging200mg
Price$80
Updated2026-05-06
Buy

Manufacturer	Product number	Product description	Packaging	Price	Updated	Buy
aablocks	AA003RA4	(S)-2-Amino-3-(3,4-Dihydroxyphenyl)-2-Methylpropanoic Acid 97%	5g	$18	2026-05-28	Buy
aablocks	AA003RA4	(S)-2-Amino-3-(3,4-Dihydroxyphenyl)-2-Methylpropanoic Acid 97%	25g	$28	2026-05-28	Buy
aablocks	AA003RA4	(S)-2-Amino-3-(3,4-Dihydroxyphenyl)-2-Methylpropanoic Acid 97%	100g	$78	2026-05-28	Buy
aablocks	AA003RA4	(S)-2-Amino-3-(3,4-Dihydroxyphenyl)-2-Methylpropanoic Acid 97%	500g	$272	2026-05-28	Buy
AHH	API-1546	Methyldopa 98%	500g	$630	2021-12-16	Buy
AHH	API-1546	Methyldopa 97%	500g	$630	2026-05-26	Buy
AK Scientific	H155	3-(3,4-Dihydroxyphenyl)-2-methyl-L-alanine Sesquihydrate	100g	$321	2021-12-16	Buy
AK Scientific	J56043	3-(3,4-Dihydroxyphenyl)-2-methyl-L-alanine Sesquihydrate	100g	$240	2021-12-16	Buy
AK Scientific	H155	3-(3,4-Dihydroxyphenyl)-2-methyl-L-alanine Sesquihydrate	25g	$107	2021-12-16	Buy
AK Scientific	J56043	3-(3,4-Dihydroxyphenyl)-2-methyl-L-alanine Sesquihydrate	25g	$80	2021-12-16	Buy
ApexBio Technology	B1787	Methyldopa	50mg	$68	2021-12-16	Buy
ApexBio Technology	B1787	Methyldopa	50mg	$50	2026-05-06	Buy
Arctom	SY057913	3-(3,4-Dihydroxyphenyl)-2-methyl-L-alanine Sesquihydrate	10mg	$49.09	2021-12-16	Buy
Biorbyt Ltd	orb1224680	L-(-)-α-Methyldopa >98%(HPLC)	100mg	$70	2026-05-06	Buy
Biorbyt Ltd	orb1310547	Methyldopa 99.89%(Mayvarybetweenbatches)	100mg	$70	2026-05-06	Buy
Biorbyt Ltd	orb1224680	L-(-)-α-Methyldopa >98%(HPLC)	200mg	$80	2026-05-06	Buy

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Properties

Melting point :≥300 °C
Boiling point :350.89°C (rough estimate)
Density :1.2545 (rough estimate)
refractive index :-14 ° (C=1, H2O)
storage temp. :Sealed in dry,2-8°C
solubility :Soluble to 75 mM in DMSO
pka :2.28±0.26(Predicted)
form :powder to crystal
color :White to Almost white
Water Solubility :10g/L(temperature not stated)
Merck :14,6055
BCS Class :3
InChI :InChI=1/C10H13NO4/c1-10(11,9(14)15)5-6-2-3-7(12)8(13)4-6/h2-4,12-13H,5,11H2,1H3,(H,14,15)/t10-/s3
InChIKey :CJCSPKMFHVPWAR-JQHDBZEONA-N
SMILES :C(C1C=CC(O)=C(O)C=1)[C@@](N)(C)C(=O)O |&1:9,r|
CAS DataBase Reference :555-30-6(CAS DataBase Reference)
EPA Substance Registry System :Methyldopa (555-30-6)

Safety Information

Symbol(GHS):

Signal word:

Warning

Hazard statements:

Code	Hazard statements	Hazard class	Category	Signal word	P-Codes
H315	Causes skin irritation	Skin corrosion/irritation	Category 2	Warning	P264, P280, P302+P352, P321,P332+P313, P362
H319	Causes serious eye irritation	Serious eye damage/eye irritation	Category 2A	Warning	P264, P280, P305+P351+P338,P337+P313P
H335	May cause respiratory irritation	Specific target organ toxicity, single exposure;Respiratory tract irritation	Category 3	Warning

Precautionary statements:

P261	Avoid breathing dust/fume/gas/mist/vapours/spray.
P305+P351+P338	IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

Description

L-(-)-α-Methyldopa is a DDC inhibitor and antihypertensive.

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Suppliers and manufacturers

Hebei Chuanghai Biotechnology Co., Ltd

$1.00
Methyldopa CAS:555-30-6

Xiamen Wonderful Bio Technology Co., Ltd.

$15.00
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Shaanxi TNJONE Pharmaceutical Co., Ltd

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ShenZhen H&D Pharmaceutical Technology Co., LTD

Carbidopa EP Impurity A CAS:555-30-6

career henan chemical co

$3.00
Methyldopa CAS:555-30-6

Shanghai Hehua Chemical Co.，Ltd

Henan Tianfu Chemical Co.,Ltd.

Xiamen AmoyChem Co., Ltd

Standardpharm Co. Ltd.

CONIER CHEM AND PHARMA LIMITED

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Methyldopa

Properties

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Description

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