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857416

Sigma-Aldrich

(−)-3-(3,4-Dihydroxyphenyl)-2-methyl-L-alanine sesquihydrate

99%, for peptide synthesis

Synonym(s):

α-Methyl-L-DOPA, L-α-Methyl-DOPA

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About This Item

Linear Formula:
(HO)2C6H3CH2C(CH3)(NH2)CO2H · 11/2H2O
CAS Number:
41372-08-1
Molecular Weight:
238.24
EC Number:
209-089-2
MDL number:
MFCD30179484
UNSPSC Code:
12352209
eCl@ss:
32160406
PubChem Substance ID:
24888444
NACRES:
NA.22
Pricing and availability is not currently available.

Product Name

(−)-3-(3,4-Dihydroxyphenyl)-2-methyl-L-alanine sesquihydrate, 99%

Quality Level

200

Assay

99%

form

powder

optical activity

[α]25/D −13°, c = 1 in H2O

reaction suitability

reaction type: solution phase peptide synthesis

mp

>300 °C (lit.)

application(s)

peptide synthesis

SMILES string

O.O.O.C[C@](N)(Cc1ccc(O)c(O)c1)C(O)=O.C[C@](N)(Cc2ccc(O)c(O)c2)C(O)=O

InChI

1S/2C10H13NO4.3H2O/c2*1-10(11,9(14)15)5-6-2-3-7(12)8(13)4-6;;;/h2*2-4,12-13H,5,11H2,1H3,(H,14,15);3*1H2/t2*10-;;;/m00.../s1

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1 of 4

This Item
1426002D9628M4255
(−)-3-(3,4-Dihydroxyphenyl)-2-methyl-L-alanine sesquihydrate 99%

857416

(−)-3-(3,4-Dihydroxyphenyl)-2-methyl-L-alanine sesquihydrate

Methyldopa United States Pharmacopeia (USP) Reference Standard

1426002

Methyldopa

3,4-Dihydroxy-L-phenylalanine ≥98% (TLC)

D9628

3,4-Dihydroxy-L-phenylalanine

3-Methoxy-L-tyrosine monohydrate powder

M4255

3-Methoxy-L-tyrosine monohydrate

assay

99%

assay

-

assay

≥98% (TLC)

assay

≥98% (HPLC)

mp

>300 °C (lit.)

mp

≥300 °C

mp

276-278 °C (lit.)

mp

-

optical activity

[α]25/D −13°, c = 1 in H2O

optical activity

-

optical activity

-

optical activity

-

Quality Level

200

Quality Level

-

Quality Level

200

Quality Level

100

reaction suitability

reaction type: solution phase peptide synthesis

reaction suitability

-

reaction suitability

-

reaction suitability

-

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves
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    Certificates of Analysis (COA)

    Lot/Batch Number
    1418980V
    1418980
    1410295
    1383390
    423253/1

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