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Direct Blue 1

Names

[ CAS No. ]:
2610-05-1

[ Name ]:
Direct Blue 1

[Synonym ]:
paperblue6b
modrprima1
CartaBlue2G
Direct Blue 1
Direct Blue 1 Pontamine sky blue
1,3-Naphthalenedisulfonic acid, 6,6'-[(3,3'-dimethoxy[1,1'-biphenyl]-4,4'-diyl)di-2,1-diazenediyl]bis[4-amino-5-hydroxy-, sodium salt (1:4)
Chicago Sky Blue
nsb6b
Tetrasodium 6,6'-[(3,3'-dimethoxy-4,4'-biphenyldiyl)di-2,1-diazenediyl]bis(4-amino-5-hydroxy-1,3-naphthalenedisulfonate)
Chicago Sky Blue 6B
Pontamine Sky Blue 6B
EINECS 220-026-8
CHICAGO BLUE
MFCD00004020
skyblue6b
C. I. Direct blue I
inkblue6b

Biological Activity

[Description]:

Direct Blue 1 (Chicago Sky Blue 6B) is a counterstain for background autofluorescence in immunofluorescence histochemistry. Direct Blue 1, structurally related to glutamate, is a potent and competitive VGLUT inhibitor without affecting plasma membrane transporters. Direct Blue 1 is the first small molecule PrP ligand capable of inhibiting Aβ binding[1].

[Related Catalog]:

Signaling Pathways >> Others >> Others
Research Areas >> Neurological Disease

[References]

[1]. Lodha N, Poojary SA. A Novel Contrast Stain for the Rapid Diagnosis of Pityriasis Versicolor: A Comparison of Chicago Sky Blue 6B Stain, Potassium Hydroxide Mount and Culture. Indian J Dermatol. 2015;60(4):340-344.

[2]. Yu G, et al. The antinociceptive effects of intracerebroventricular administration of Chicago sky blue 6B, a vesicular glutamate transporter inhibitor. Behav Pharmacol. 2013;24(8):653-658.

[3]. Risse E, et al. Identification of a Compound That Disrupts Binding of Amyloid-β to the Prion Protein Using a Novel Fluorescence-based Assay. J Biol Chem. 2015;290(27):17020-17028.

Chemical & Physical Properties

[ Molecular Formula ]:
C34H24N6Na4O16S4

[ Molecular Weight ]:
992.804

[ Exact Mass ]:
991.972229

[ PSA ]:
422.72000

[ LogP ]:
10.18560

[ Storage condition ]:
Store at RT

MSDS

Toxicological Information

CHEMICAL IDENTIFICATION

RTECS NUMBER :
QJ6430000
CHEMICAL NAME :
6,8-Naphthalenedisulfonic acid, 3,3'-((3,3'-dimethoxy-4,4'-biphenylene)bis(azo))bis( 5-amino-4-hydroxy-, tetrasodium salt
CAS REGISTRY NUMBER :
2610-05-1
LAST UPDATED :
199710
DATA ITEMS CITED :
13
MOLECULAR FORMULA :
C34-H28-N6-O16-S4.4Na
MOLECULAR WEIGHT :
996.88
WISWESSER LINE NOTATION :
L66J BZ CSWO ESWO JQ INUNR BO1 DR CO1 DNUN- IL66J BZ CSWO ESWO JQ &-NA- 4

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intravenous
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
2260 mg/kg
TOXIC EFFECTS :
Cardiac - other changes Lungs, Thorax, or Respiration - other changes
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Intraperitoneal
DOSE :
200 mg/kg
SEX/DURATION :
female 8 day(s) after conception
TOXIC EFFECTS :
Reproductive - Specific Developmental Abnormalities - Central Nervous System Reproductive - Specific Developmental Abnormalities - eye/ear Reproductive - Effects on Embryo or Fetus - fetotoxicity (except death, e.g., stunted fetus)
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Intraperitoneal
DOSE :
140 mg/kg
SEX/DURATION :
female 8 day(s) after conception
TOXIC EFFECTS :
Reproductive - Fertility - post-implantation mortality (e.g. dead and/or resorbed implants per total number of implants)
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Intraperitoneal
DOSE :
200 mg/kg
SEX/DURATION :
female 8 day(s) after conception
TOXIC EFFECTS :
Reproductive - Effects on Embryo or Fetus - other effects to embryo
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Intraperitoneal
DOSE :
100 mg/kg
SEX/DURATION :
female 9 day(s) after conception
TOXIC EFFECTS :
Reproductive - Specific Developmental Abnormalities - eye/ear

MUTATION DATA

TYPE OF TEST :
Mutation in microorganisms
TEST SYSTEM :
Bacteria - Salmonella typhimurium
DOSE/DURATION :
100 nmol/plate
REFERENCE :
MUREAV Mutation Research. (Elsevier Science Pub. B.V., POB 211, 1000 AE Amsterdam, Netherlands) V.1- 1964- Volume(issue)/page/year: 97,103,1982 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - M2162 No. of Facilities: 53 (estimated) No. of Industries: 4 No. of Occupations: 6 No. of Employees: 1141 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - M2162 No. of Facilities: 156 (estimated) No. of Industries: 7 No. of Occupations: 14 No. of Employees: 10195 (estimated) No. of Female Employees: 6491 (estimated)

Safety Information

[ Symbol ]:

GHS08

[ Signal Word ]:
Danger

[ Hazard Statements ]:
H350

[ Precautionary Statements ]:
P201-P308 + P313

[ Hazard Codes ]:
Xn: Harmful;

[ Risk Phrases ]:
R20/21/22

[ Safety Phrases ]:
S24/25

[ RIDADR ]:
UN 3143

[ WGK Germany ]:
3

[ RTECS ]:
QJ6430000

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