Product

4-NITROPHENYL-ALPHA-D-GALACTOPYRANOSIDE

CAS No.：7493-95-0

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4-NITROPHENYL-ALPHA-D-GALACTOPYRANOSIDE Basic information

Product Name:	4-NITROPHENYL-ALPHA-D-GALACTOPYRANOSIDE
Synonyms:	alpha-d-galactopyranoside,4-nitrophenyl;4-NITROPHENYL-ALPHA-D-GALACTOPYRANOSIDE;PNP-ALPHA-D-GAL;PNP ALPHA-D-GALACTOPYRANOSIDE;PNP-ALPHA-GAL;PNPG;P-NITROPHENYL A-D-GALACTOPYRANOSIDE;P-NITROPHENYL ALPHA-D-GALACTOPYRANOSIDE
CAS:	7493-95-0
MF:	C12H15NO8
MW:	301.25
EINECS:	231-343-6
Product Categories:	substrate;Enzyme substrates;13C & 2H Sugars;Biochemistry;Galactose;Carbohydrates & Derivatives;Substrates;Glycosides;Sugars
Mol File:	7493-95-0.mol

4-NITROPHENYL-ALPHA-D-GALACTOPYRANOSIDE Chemical Properties

Melting point	166-169 °C
Boiling point	582.2±50.0 °C(Predicted)
density	1.599±0.06 g/cm3(Predicted)
refractive index	239 ° (C=1, H2O)
storage temp.	-20°C
solubility	Methanol (Slightly), Water (Slightly)
form	Solid
pka	12.55±0.70(Predicted)
color	White to Off-White
BRN	92214
InChIKey	IFBHRQDFSNCLOZ-IIRVCBMXSA-N
CAS DataBase Reference	7493-95-0(CAS DataBase Reference)

Safety Information

Hazard Codes	Xi
Risk Statements	36/37/38
Safety Statements	22-24/25-36-26
WGK Germany	3
F	3-10-21
HS Code	29400090

MSDS Information

Provider	Language
SigmaAldrich	English
ACROS	English
ALFA	English

4-NITROPHENYL-ALPHA-D-GALACTOPYRANOSIDE Usage And Synthesis

Chemical Properties	Off-White Crystalline Solid
Uses	p-Nitrophenyl α-D-Galactopyranoside (cas# 7493-95-0) is a compound useful in organic synthesis.
Definition	ChEBI: An alpha-D-galactopyranoside having a 4-nitrophenyl substituent at the anomeric position.
Purification Methods	Purify 4-nitrophenyl--D-galactopyranoside by recrystallisation from H2O or aqueous EtOH. The monohydrate has m 85o which resolidifies and melts again at 151-152o (the hemihydrate), then resolidifies again and melts at 173o to give the anhydrous form. Drying the monohydrate at 60o yields the hemihydrate, and drying at 100o gives the anhydrous compound. The tetraacetate has m 147o after drying at 100o. [Jermyn Aust J Chem 15 569 1962, Helfreich & Jung Justus Liebigs Ann Chem 589 77 1954.] It is a substrate for galactosidase [Dangelmaier & Holmsen Anal Biochem 104 182 1980]. [Beilstein 17/7 V 55.]

4-NITROPHENYL-ALPHA-D-GALACTOPYRANOSIDE Preparation Products And Raw materials

Raw materials

Ethanol-->Sodium hydroxide-->Methanol-->Dichloromethane-->Sodium-->Chloroform-->Acetic anhydride-->Sodium bicarbonate-->Sodium acetate-->Tin tetrachloride-->Butyl acetate-->4-Nitrophenol-->D-Galactose-->AMBERLYST(R) 15

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