ChemicalBook >> CAS DataBase List >>4-Nitrophenyl-alpha-D-galactopyranoside

4-Nitrophenyl-alpha-D-galactopyranoside

4-Nitrophenyl-alpha-D-galactopyranoside structure

CAS No.: 7493-95-0

Chemical Name:: 4-Nitrophenyl-alpha-D-galactopyranoside

Synonyms: PNPG;oside;NSC 89286;pyranGal-a-PNP;GAL1-A-PNP;Gal1-α-PNP;PNP-ALPHA-GAL;PNP-ALPHA-D-GAL;α-Methyl-β-alanine

CBNumber:: CB7433232

Molecular Formula:: C12H15NO8

Molecular Weight:: 301.25

MDL Number:: MFCD00065050

MOL File:: 7493-95-0.mol

MSDS File:: SDS

TDS File:: TDS

Last updated:2026-09-12 18:54:56

Request For Quotation

4-Nitrophenyl-alpha-D-galactopyranoside 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
InChI	InChI=1/C12H15NO8/c14-5-8-9(15)10(16)11(17)12(21-8)20-7-3-1-6(2-4-7)13(18)19/h1-4,8-12,14-17H,5H2/t8-,9+,10+,11-,12+/s3
InChIKey	IFBHRQDFSNCLOZ-IIRVCBMXSA-N
SMILES	O(C1C=CC(N(=O)=O)=CC=1)[C@H]1O[C@H](CO)[C@H](O)[C@H](O)[C@H]1O \|&1:10,12,15,17,19,r\|
LogP	-0.550 (est)
CAS DataBase Reference	7493-95-0(CAS DataBase Reference)
UNSPSC Code	12352204
NACRES	NA.32

SAFETY

Risk and Safety Statements

Symbol(GHS)

GHS07

Signal word

Warning

Hazard statements

H315-H319-H335

Precautionary statements

P261-P305+P351+P338

PPE

Eyeshields, Gloves, type N95 (US)

Hazard Codes

Risk Statements

36/37/38

Safety Statements

22-24/25-36-26

WGK Germany

3-10-21

HS Code

29400090

Storage Class

11 - Combustible Solids

NFPA 704

	1
1		1

4-Nitrophenyl-alpha-D-galactopyranoside price More Price(61)

Manufacturer	Product number	Product description	CAS number	Packaging	Price	Updated	Buy
Sigma-Aldrich	N0877	4-Nitrophenyl α-D-galactopyranoside α-galactosidase substrate	7493-95-0	1g	$244	2026-04-30	Buy
Sigma-Aldrich	N0877	4-Nitrophenyl α-D-galactopyranoside α-galactosidase substrate	7493-95-0	5g	$816	2026-04-30	Buy
TCI Chemical	N0492	4-Nitrophenyl α-D-Galactopyranoside [Substrate for α-D-Galactosidase] >98.0%(HPLC)	7493-95-0	200mg	$48	2026-04-30	Buy
TCI Chemical	N0492	4-Nitrophenyl α-D-Galactopyranoside [Substrate for α-D-Galactosidase] >98.0%(HPLC)	7493-95-0	1g	$144	2026-04-30	Buy
TRC	TRC-N503600-5G	p-Nitrophenyl alpha-D-Galactopyranoside	7493-95-0	5g	$183	2026-06-03	Buy

Product number	Packaging	Price	Buy
N0877	1g	$244	Buy
N0877	5g	$816	Buy
N0492	200mg	$48	Buy
N0492	1g	$144	Buy
TRC-N503600-5G	5g	$183	Buy

4-Nitrophenyl-alpha-D-galactopyranoside Chemical Properties,Uses,Production

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

Sodium acetate D-Galactose Ethanol Tin tetrachloride Acetic anhydride

Sodium Chloroform Benzenesulfonic acid, ethenyl-, polymer with diethenylbenzene Butyl acetate Sodium bicarbonate

Dichloromethane 4-Nitrophenol Methanol Sodium hydroxide

1of3

Preparation Products

4-Nitrophenyl-alpha-D-galactopyranoside Suppliers

Global( 293)Suppliers

Supplier	Tel	Email	Country	ProdList	Advantage
Jinan Samuel Pharmaceutical Co., Ltd.	0531-88821801 15192360884	605818151@qq.com	China	479	58
J & K SCIENTIFIC LTD.	18210857532 18210857532	jkinfo@jkchemical.com	China	96815	76
Meryer (Shanghai) Chemical Technology Co., Ltd.	4006356688 18621169109	market03@meryer.com	China	40202	62
3B Pharmachem (Wuhan) International Co.,Ltd.	18930552037	3bsc@sina.com	China	15813	69
Alfa Aesar	400-6106006	saleschina@alfa-asia.com	China	30103	84
TCI (Shanghai) Development Co., Ltd.	021-67121386	Sales-CN@TCIchemicals.com	China	24512	81
Energy Chemical	400-0056266	sales8178@energy-chemical.com	China	44850	61
Feiyang Biotechnology Co., Ltd	0533-7866336 13573361699	sales@chemfy.com	China	524	62
Shanghai Hanhong Scientific Co.,Ltd.	021-54306202 13764082696	info@hanhongsci.com	China	42917	64
Chemsky（shanghai）International Co.,Ltd.	021-50135380	shchemsky@sina.com	China	32273	50

Supplier	Advantage
Jinan Samuel Pharmaceutical Co., Ltd.	58
J & K SCIENTIFIC LTD.	76
Meryer (Shanghai) Chemical Technology Co., Ltd.	62
3B Pharmachem (Wuhan) International Co.,Ltd.	69
Alfa Aesar	84
TCI (Shanghai) Development Co., Ltd.	81
Energy Chemical	61
Feiyang Biotechnology Co., Ltd	62
Shanghai Hanhong Scientific Co.,Ltd.	64
Chemsky（shanghai）International Co.,Ltd.	50

View Lastest Price from 4-Nitrophenyl-alpha-D-galactopyranoside manufacturers

Update time	Product	Price	Min. Order	Purity	Supply Ability	Manufacturer
2026-09-11	4-Nitrophenyl α-D-Galactopyranoside 7493-95-0		10G	98%min	30kg/month	WUHAN FORTUNA CHEMICAL CO., LTD
2026-05-11	4-Nitrophenyl α-D-galactopyranoside 7493-95-0	$30.00		99.44%	10g	TargetMol Chemicals Inc.
2020-03-26	Gal-a-PNP 7493-95-0		1G	97%HPLC		GlycoPharm.LLC

4-Nitrophenyl α-D-Galactopyranoside
7493-95-0
$0.00
98%min
WUHAN FORTUNA CHEMICAL CO., LTD

4-Nitrophenyl α-D-galactopyranoside
7493-95-0
$30.00
99.44%
TargetMol Chemicals Inc.

Gal-a-PNP
7493-95-0
$0.00
97%HPLC
GlycoPharm.LLC

4-Nitrophenyl-alpha-D-galactopyranoside Spectrum

4-NITROPHENYL-ALPHA-D-GALACTOPYRANOSIDE(7493-95-0)¹HNMR 4-NITROPHENYL-ALPHA-D-GALACTOPYRANOSIDE(7493-95-0)¹³CNMR

7493-95-0(4-Nitrophenyl-alpha-D-galactopyranoside)Related Search:

4-NITROPHENYL-BETA-D-GLUCOPYRANOSIDE 4-NITROPHENYL-ALPHA-D-GLUCOPYRANOSIDE 4-Nitrophenyl-beta-D-galactopyranoside n-Octyl-β-D-glucopyranoside 2-Nitrophenyl-beta-D-galactopyranoside

2-NITROPHENYL-BETA-D-GLUCOPYRANOSIDE 4-Methoxyphenyl beta-D-galactopyranoside 4-Nitrophenyl-beta-D-glucuronide 2-Nitrophenyl-alpha-D-galactopyranoside 4-NITROPHENYL-ALPHA-D-GALACTOPYRANOSIDE

4-Nitrophenyl 2-O-(a-L-Fucopyranosyl)-a-D-galactopyranoside P-NITROPHENYL 6-O-BENZOYL-3,4-O-ISOPROPYLIDENE-A-D-GALACTOPYRANOSIDE 4-Nitrophenyl2,6-di-O-benzoyl-a-D-galactopyranoside (4-Nitro)phenyl-2,3,4,6-tetra-O-acetyl-alpha-D-galactopyranoside 3-Nitrophenyl-alpha-D-galactopyranoside

P-NITROPHENYL 6-O-BENZOYL-2-O-(2,3,4-TRI-O-ACETYL-A-L-FUCOPYRANOSYL)-A-D-GALACTOPYRANOSIDE p-Nitrophenyl 6-O-benzoyl-2-O-(2,3,4-tri-O-acetyl-β-L-fucopyranosyl)-alpha-D-galactopyranoside P-NITROPHENYL 6-O-BENZOYL-3,4-O-ISOPROPYLIDENE-2-O-(2,3,4-TRI-O-ACETYL-A-L-FUCOPYRANOSYL)-A-D-GALACTOPYRANOSIDE

1of4

alpha-d-galactopyranoside,4-nitrophenyl PNP-ALPHA-D-GAL PNP ALPHA-D-GALACTOPYRANOSIDE PNP-ALPHA-GAL PNPG P-NITROPHENYL A-D-GALACTOPYRANOSIDE P-NITROPHENYL ALPHA-D-GALACTOPYRANOSIDE P-NITROPHENYL ALPHA-D-GALACTOSIDE P-NITROPHENYL-ALPHA-D-GALACTOYRANOSIDE NITROPHENYL-A-D-GALACTOPYRANOSIDE, 4- GAL1-A-PNP 4-Nitrophenyl α-D-galactopyranoside P-Nitrophenyl-Alpha-D-GalactopyranosideA.R. p-Nitrophenyl--D-galactoyranoside 4’-nitrophenyl-b-D-galactopyranoside 4-nitrophenyl-à-d-galactopyranoside 5-Nitrophenyl β-D-galactopyranoside 4-nitrophenyl-alpha-D-galactoside α-D-Galactopyranoside, 4-nitropheny 4-Nitrophenyla-D-galactopyranoside 4-Nitrophenyl-ɑ-D-galactopyranoside, 98+% 4-Nitrophenyl alpha-D-Galactopyranoside [Substrate for alpha-D-Galactosidase] Gal1-α-PNP Nitrophenyl-α-D-Glucoyranoside p-NITROPHENYL-a-D-GLUCOPYRANOSIDE extrapure 4-Nitrophenyl-^a-D-galactopyranoside, 98+% 4-Nitrophenyl-alpha-D-galactopyranoside, 98+% 4-nitrophenyl α-D-galactopyranoside(p-) 4-Nitrophenyl-α-D-galactopyranoside ,98% 4-Nitrophenyl α-D-galacto-pyran-oside,p-Nitrophenyl α-D-galacto-pyran-oside [Substrate for alpha-D-Galactosidase] 4-Nitrophenyl alpha-D-Galactopyranoside NSC 89286 4-Nitrophenyl α-D-galacto oside pyran 4-Nitrophenyl α-D-Galactopyranoside [Substrate for α-D-Galactosidase] Gal-a-PNP 4-Nitrophenylα-D-Galactopyranoside[Substrateforα-D-Galactosidase]> α-D-Galactopyranoside, 4-nitrophenyl 4-Nitrophenyl α-D-galactopyranoside (2R,3R,4S,5R,6R)-2-(Hydroxymethyl)-6-(4-nitrophenoxy)tetrahydro-2H-pyran-3,4,5-triol 4-NITROPHENYL-ALPHA-D-GALACTOPYRANOSIDE USP/EP/BP p-Nitrophenyl α-D-Galactopyranoside 4-nitrophenyl alpha-dextro-galactopyranoside 4-Nitrophenyl α-D-galactopyranoside PNPG p-Nitrophenyl a-D-Galactopyranoside extrapure, 98% α-Methyl-β-alanine 4-Nitrobenzene- α- D-galactopyranoside 4-Nitrophenyl α-D-Galactopyranoside/4-Nitrophenyl-α-D-galactopyranoside/Gal-α-pNP 4-Nitrophenyl α-D-galactopyranoside, 10 mM in DMSO 4-Nitrophenyl α-D-galactopyranoside 4-Nitrophenyl alpha-D-galactopyranoside alpha-galactosidase substrate 4-Nitrophenyl-alpha-D-galactopyranoside 7493-95-0 Biochemicals and Reagents BioChemical Galactose