ALPHA-D-GALACTURONIC ACID HYDRATE Chemical Properties

Melting point:

156-159℃

alpha 

+51.7°(23℃/D, ｃ=1, H2O)

refractive index 

52.5 ° (C=10, H2O)

storage temp. 

Inert atmosphere,Room Temperature

solubility 

DMSO (Slightly, Sonicated), Methanol (Slightly), Water (Slightly)

form 

Powder

color 

White to Off-white

optical activity

[α]20/D +53±2°, 5 hr, c = 10% in H2O

Water Solubility 

Soluble in water

Merck 

14,4337

BRN 

1727087

CAS DataBase Reference

91510-62-2(CAS DataBase Reference)

Safety Information

Safety Statements 

24/25

WGK Germany 

3

TSCA 

Yes

HS Code 

29329990

ALPHA-D-GALACTURONIC ACID HYDRATE Usage And Synthesis

Chemical Properties

white to light beige fine powder

Uses

D-(+)-Galacturonic acid monohydrate is a chemical used in the synthesis of N-(D-galacturonoyl) amino acids and dipeptides.

Uses

ALPHA-D-GALACTURONIC ACID HYDRATE is highly purified product form Pectine.It is used in the synthesis of N-(D-galacturonoyl) amino acids and dipeptides.

Purification Methods

Crystallisation of the acid from 95% EtOH and drying it in a vacuum desiccator (12mm) over P2O5 gives the monohydrate mixture of and anomers (mostly -) as white micro needles, which sinter at ~100-111o and melt at 159-160o, [] D 20 +107o (initial, c 4 in H2O mutarotating to +51o). [Link & Sell Biochemical Preparations 3 74, 78 1953, Beilstein 3 IV 2000.] The -anomer is obtained by warming the -anomer in EtOH, AcOH or EtOAc and has m 1 6 0o (165o, sinters at 1 4 0o), [] D 20 +27o (initial, c 2 in H2O mutarotating to +55.3o in 24hours). The sodium salt [14984-39-5] M 216.1 has [] D 20 +27o (c 10 in H2O after 5hours). The phenylhydrazone has m 141o(from MeOH). [Ehrlich & Schubert Chem Ber 62 1974, 2014 1929, Anderson & King J Chem Soc 5333 1961, Beilstein 3 IV 2001.]

ALPHA-D-GALACTURONIC ACID HYDRATE(91510-62-2)Related Product Information

• Potassium Phosphate Monobasic
• Hyaluronic acid
• Arabic gum
• TRIGALACTURONIC ACID
• ALPHA-D-GALACTURONIC ACID HYDRATE
• D-GALACTURONIC ACID
• D-GALACTOSE 1-[2-(2-AZIDOETHOXY)ETHOXYETHYL]-2,3,4,6-TETRA-O-ACETATE
• ALLANTOIN POLYGALACTURONIC ACID
• ALLANTOIN GALACTURONIC ACID
• POLYGALACTURONIC ACID
• POLYGALACTURONIC ACID(RG)
• Pectinase
• PRIMULIC ACID 1
• ALPHA-D-GALACTURONIC ACID 1-PHOSPHATE LITHIUM SALT
• DIGALACTURONIC ACID
• METHYL-(ALLYL 2,3,4-TETRA-O-ACETYL-BETA-D-GALACTOPYRANOSID)URONATE
• P-NITROPHENYL BETA-D-GALACTOPYRANOSIDURONIC ACID
• METHYL-(1,2,3,4-TETRA-O-ACETYL-ALPHA-D-GALACTOPYRANOSE)URONATE