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3,3'-Dioxo[Δ2,2'-biindoline]-5-sulfonic acid is a complex organic chemical compound with the molecular formula C16H10N2O5S. It is a derivative of indoline, a bicyclic structure consisting of a six-membered benzene ring fused to a five-membered nitrogen-containing pyrrolidine ring. The compound features a sulfonic acid group (-SO3H) attached to the 5-position of the indoline core, and two carbonyl groups (C=O) at the 3 and 3' positions, which are part of a lactam ring structure. This chemical is known for its potential applications in the synthesis of dyes and pigments, as well as in the pharmaceutical industry for the development of drugs with specific biological activities. Its unique structure and functional groups make it an interesting target for chemical research and development.

605-18-5

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Basic information
1. Product Name: 3,3'-Dioxo[Δ2,2'-biindoline]-5-sulfonic acid
2. Synonyms: 2-(1,3-Dihydro-3-oxo-2H-indol-2-ylidene)-2,3-dihydro-3-oxo-1H-indole-5-sulfonic acid;3,3'-Dioxo[Δ2,2'-biindoline]-5-sulfonic acid;5-Indigosulfonic acid;Indigo sulfonic acid
3. CAS NO:605-18-5
4. Molecular Formula: C₁₆H₁₀N₂O₅S
5. Molecular Weight: 342.326
6. EINECS: N/A
7. Product Categories: N/A
8. Mol File: 605-18-5.mol
Chemical Properties
1. Melting Point: N/A
2. Boiling Point: N/A
3. Flash Point: N/A
4. Appearance: /
5. Density: 1.647±0.06 g/cm3(Predicted)
6. Refractive Index: N/A
7. Storage Temp.: N/A
8. Solubility: N/A
9. PKA: -1.00±0.20(Predicted)
10. CAS DataBase Reference: 3,3'-Dioxo[Δ2,2'-biindoline]-5-sulfonic acid(CAS DataBase Reference)
11. NIST Chemistry Reference: 3,3'-Dioxo[Δ2,2'-biindoline]-5-sulfonic acid(605-18-5)
12. EPA Substance Registry System: 3,3'-Dioxo[Δ2,2'-biindoline]-5-sulfonic acid(605-18-5)
Safety Data
1. Hazard Codes: N/A
2. Statements: N/A
3. Safety Statements: N/A
4. WGK Germany:
5. RTECS:
6. HazardClass: N/A
7. PackingGroup: N/A
8. Hazardous Substances Data: 605-18-5(Hazardous Substances Data)

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605-18-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 605-18-5 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 6,0 and 5 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 605-18:
(5*6)+(4*0)+(3*5)+(2*1)+(1*8)=55
55 % 10 = 5
So 605-18-5 is a valid CAS Registry Number.

605-18-5SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 19, 2017

Revision Date: Aug 19, 2017

1.Identification

1.1 GHS Product identifier

Product name	(2E)-3-oxo-2-(3-oxo-1H-indol-2-ylidene)-1H-indole-5-sulfonic acid

1.2 Other means of identification

Product number	-
Other names	Indigo sulfonic acid

1.3 Recommended use of the chemical and restrictions on use

Identified uses	For industry use only.
Uses advised against	no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number	-
Service hours	Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:605-18-5 SDS

605-18-5Upstream product

482-89-3 1H,1H'-2,2'-Biindolylidene-3,3'-dione

605-18-5Downstream Products

3225-29-4 p-benzosemiquinone radical anion

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