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N-(2,3-Dihydro-2-oxo-1H-benzimidazol-5-yl)-3-hydroxy-2-naphthalenecarboxamide

N-(2,3-Dihydro-2-oxo-1H-benzimidazol-5-yl)-3-hydroxy-2-naphthalenecarboxamide structure

CAS No.: 1237-75-8

Chemical Name:: N-(2,3-Dihydro-2-oxo-1H-benzimidazol-5-yl)-3-hydroxy-2-naphthalenecarboxamide

Synonyms: C.I.37566;AI3-50089;AI 3-50089;AI-3-50089;CI NO 37566;Naphtol AS-BI;NAPHTHOL AS-BI;5-(3-Hydroxy-2-napht;Naphthol AS-BI, 94.0%;Naphthol AS-BI (C.I. 37566)

CBNumber:: CB3409651

Molecular Formula:: C18H14BrNO3

Molecular Weight:: 372.21

MDL Number:: MFCD00388332

MOL File:: 1237-75-8.mol

MSDS File:: SDS

Last updated:2026-05-28 06:27:40

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N-(2,3-Dihydro-2-oxo-1H-benzimidazol-5-yl)-3-hydroxy-2-naphthalenecarboxamide Properties

Boiling point	467.3±40.0 °C(Predicted)
Density	1.544±0.06 g/cm3(Predicted)
storage temp.	2-8°C
pka	8.42±0.40(Predicted)
CAS DataBase Reference	1237-75-8(CAS DataBase Reference)
FDA UNII	V2TG9VZA3M
EPA Substance Registry System	2-Naphthalenecarboxamide, 7-bromo-3-hydroxy-N-(2-methoxyphenyl)- (1237-75-8)

SAFETY

Risk and Safety Statements

Symbol(GHS)	GHS07
Signal word	Warning
Hazard statements	H302
Precautionary statements	P280-P305+P351+P338
TSCA	TSCA listed

N-(2,3-Dihydro-2-oxo-1H-benzimidazol-5-yl)-3-hydroxy-2-naphthalenecarboxamide price More Price(23)

Manufacturer	Product number	Product description	CAS number	Packaging	Price	Updated	Buy
Biosynth	N-1901	Naphthol AS-BI, 94.0%	1237-75-8	2.5g	$441.85	2026-06-04	Buy
Biosynth	N-1901	Naphthol AS-BI, 94.0%	1237-75-8	5g	$736.4	2026-06-04	Buy
Biosynth	N-1901	Naphthol AS-BI, 94.0%	1237-75-8	10g	$1227.2	2026-06-04	Buy
Biosynth	N-1901	Naphthol AS-BI, 94.0%	1237-75-8	25g	$2556.75	2026-06-04	Buy
Biosynth	N-1901	Naphthol AS-BI, 94.0%	1237-75-8	50g	$4257	2026-06-04	Buy

Product number	Packaging	Price	Buy
N-1901	2.5g	$441.85	Buy
N-1901	5g	$736.4	Buy
N-1901	10g	$1227.2	Buy
N-1901	25g	$2556.75	Buy
N-1901	50g	$4257	Buy

N-(2,3-Dihydro-2-oxo-1H-benzimidazol-5-yl)-3-hydroxy-2-naphthalenecarboxamide Chemical Properties, Uses, Production

Uses

Naphthol AS-BI is a substrate of β-glucuronidase and produces a bright red effect after staining biological tissues.

Preparation

O-Anisidineand 7-Bromo-3-hydroxy-2-naphthoic acidcondensation

References

[1] HAYASHI M, NAKAJIMA Y, FISHMAN W H. The cytologic demonstration of β-glucuronidase employing naphthol AS-BI glucuronide and hexazonium pararosanilin; a preliminary report[J]. Journal of Histochemistry & Cytochemistry, 1964, 12(4): 293-297.

N-(2,3-Dihydro-2-oxo-1H-benzimidazol-5-yl)-3-hydroxy-2-naphthalenecarboxamide Preparation Products And Raw materials

Raw materials

7-Bromo-3-hydroxy-naphthalene-2-carboxylic acid o-Anisidine

Preparation Products

N-(2,3-Dihydro-2-oxo-1H-benzimidazol-5-yl)-3-hydroxy-2-naphthalenecarboxamide Suppliers

Global Suppliers ( 66)

Supplier	Tel	Email	Country	ProdList	Advantage
Shanghai Longsheng chemical Co.,Ltd.	58099637 13585536065	sales@shlschem.com	China	9880	59
Chengdu RunZeBenTu Chemical Co., Ltd	028-88469284 18000562381;	rzbtsj@163.com	China	9939	56
Amadis Chemical Company Limited	571-89925085	sales@amadischem.com	China	131885	58
MQ (shanghai) Pharmaceuticals Co., Ltd.	13761635123	sales@linyuepharm.com	China	5731	55
Shanghai Orgchem Co.,Ltd.	+86-21-5877 1921	info@chemofchina.com	China	9630	55
Aikon International Limited	025-58859352 13913916777	dt3@aikonchem.com	China	15490	58
Wuhan FengyaoTonghui Chemical Products Co., Ltd.	027-87466105 15377573527	2678564200@qq.com	China	17968	58
TargetMol Chemicals Inc.	+1-781-999-5354; +1-00000000000	marketing@targetmol.com	United States	32431	58
Hefei TNJ Chemical Industry Co.,Ltd.	+86-0551-65418671 +86-189 4982 3763	sales@tnjchem.com	China	34526	58
Dayang Chem (Hangzhou) Co.,Ltd.	+86-0571-88938639 17705817739	info@dycnchem.com	China	52451	58

Supplier	Advantage
Shanghai Longsheng chemical Co.,Ltd.	59
Chengdu RunZeBenTu Chemical Co., Ltd	56
Amadis Chemical Company Limited	58
MQ (shanghai) Pharmaceuticals Co., Ltd.	55
Shanghai Orgchem Co.,Ltd.	55
Aikon International Limited	58
Wuhan FengyaoTonghui Chemical Products Co., Ltd.	58
TargetMol Chemicals Inc.	58
Hefei TNJ Chemical Industry Co.,Ltd.	58
Dayang Chem (Hangzhou) Co.,Ltd.	58

View Latest Price from N-(2,3-Dihydro-2-oxo-1H-benzimidazol-5-yl)-3-hydroxy-2-naphthalenecarboxamide manufacturers

Image	Update time	Product	Price	Min. Order	Purity	Supply Ability	Manufacturer
	2025-12-24	Naphthol AS-BI 1237-75-8		1KG	99%	1000Kg	Shaanxi Dideu Medichem Co. Ltd
	2020-02-21	N-(2,3-Dihydro-2-oxo-1H-benzimidazol-5-yl)-3-hydroxy-2-naphthalenecarboxamide 1237-75-8	$3.00	1KG	98%	200KG	Career Henan Chemical Co

Naphthol AS-BI
1237-75-8
99%
Shaanxi Dideu Medichem Co. Ltd

N-(2,3-Dihydro-2-oxo-1H-benzimidazol-5-yl)-3-hydroxy-2-naphthalenecarboxamide
1237-75-8
$3.00
98%
Career Henan Chemical Co

N-(2,3-Dihydro-2-oxo-1H-benzimidazol-5-yl)-3-hydroxy-2-naphthalenecarboxamide Spectrum

N-(2,3-Dihydro-2-oxo-1H-benzimidazol-5-yl)-3-hydroxy-2-naphthalenecarboxamide(1237-75-8)MS N-(2,3-Dihydro-2-oxo-1H-benzimidazol-5-yl)-3-hydroxy-2-naphthalenecarboxamide(1237-75-8)IR1 N-(2,3-Dihydro-2-oxo-1H-benzimidazol-5-yl)-3-hydroxy-2-naphthalenecarboxamide(1237-75-8)IR2

1237-75-8 (N-(2,3-Dihydro-2-oxo-1H-benzimidazol-5-yl)-3-hydroxy-2-naphthalenecarboxamide) Related Search:

Naphthol AS 4'-Chloro-2',5'-dimethoxyacetoacetanilide Naphtanilide EL Naphthol as-GR purified grade A,a'-terephthaloylbis-5-chloro-2,4-dimethoxyacetanilide

N,N'-(3,3'-dimethyl[1,1'-biphenyl]-4,4'-diyl)bis(3-hydroxynaphthalene-2-carboxamide) Naphthol as-bi beta-D-glucuronide Naphthol as-bi phosphate Naphthol AS-BI phosphate disodium salt N-(2,3-Dihydro-2-oxo-1H-benzimidazol-5-yl)-3-hydroxy-2-naphthalenecarboxamide

Naphthol as-bi sulfate potassium salt Naphthol as-bi beta-L-fucopyranoside Naphthol as-bi N-acetyl-beta-D-glucosaminide Naphthol as-bi beta-D-galactopyranoside 1-(Naphthol as bi)-beta-D-glucopyranoside

Naphthol as-bi phosphate sodium salt Naphtholas-bibutyrate N-Benzoyl-DL-phenylalanine beta-naphthol as-bi ester

1of4

N-(2,3-Dihydro-2-oxo-1H-benzimidazol-5-yl)-3-hydroxynaphthalin-2-carboxamid 2-Naphthalenecarboxamide, N-(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)-, 3-hydroxy 6-Bromo-2-hydroxy-3-naphthoic acid 2-methoxyanilide Azoic Coupling Component 45 Naphthol AS-BI, 94.0% CI NO 37566 7-BROMO-3-HYDROXY-N-(2-METHOXYPHENYL)-2-NAPHTHALENECARBOXAMIDE 5-(3-Hydroxy-2-napht Naphthol AS-BI (C.I. 37566) 7-Bromo-3-hydroxy-N-(2-methoxyphenyl)-2-naphthamide C.I.37566 C.I.Azoic Coupling Component 45 Naphtol AS-BI 7-bromo-3-hydroxy-N-(2-methoxyphenyl)naphthalene-2-carboxamide N-(2,3-Dihydro-2-oxo-1H-benziMidazol-5-yl)-3-hydro N-(2,3-Dihydro-2-oxo-1H-benziMidazol-5-yl)-3-hydroxy-3-naphthalenecarboxaMide, Naphthol AS-BI NAPHTHOL AS-BI 7-bromo-3-hydroxy-n-(2-methoxyphenyl)-2-naphthalenecarboxamid 6-bromo-2-hydroxy-N-o-hydroxyphenylnaphthalene-3-carboxamide 5-(3'-Hydroxy-2'-naphthylformamido)benzimidazolone N-C2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)-3-Hydorxy-2-Naphthalenecarboxamide N-(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)-3-hydroxynaphthalene-2-carboxamide 5-(3-Hydroxy-2-Naphthoylamino)Benzimidazolin-2-One 3-hydroxy-N-(2-oxo-5-benzimidazolinyl)-2-naphthamide NAPHTHOL AS-BI C.I. NO. 37566 2-Naphthalenecarboxamide, 7-bromo-3-hydroxy-N-(2-methoxyphenyl)- C.I.Azoic Coupling Component 45:C.I.37566 Naphthol AS-BI extrapure, 98% AI 3-50089 AI-3-50089 AI3-50089 7-Bromo-3-hydroxy-N-(2-methoxyphenyl)-2-naphthamide , Naphthol AS-BI 7-Bromo-3-hydroxy-N - (2-methoxyphenyl) -2-naphthalimide 1237-75-8 2684-40-8 C18H13N3O3 Intermediates of Dyes and Pigments Miscellaneous Biochemicals