Orthanilic acid
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Hodoodo CAT#: H592261

CAS#: 88-21-1

Description: Orthanilic acid promotes reverse turn formation in peptides.


Chemical Structure

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Orthanilic acid
CAS# 88-21-1

Theoretical Analysis

Hodoodo Cat#: H592261
Name: Orthanilic acid
CAS#: 88-21-1
Chemical Formula: C6H7NO3S
Exact Mass: 173.01
Molecular Weight: 173.186
Elemental Analysis: C, 41.61; H, 4.07; N, 8.09; O, 27.71; S, 18.51

Price and Availability

Size Price Availability Quantity
100g USD 270 2 Weeks
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Synonym: Orthanilic acid; NSC 147; NSC-147; NSC147

IUPAC/Chemical Name: 2-Aminobenzenesulphonic acid

InChi Key: ZMCHBSMFKQYNKA-UHFFFAOYSA-N

InChi Code: InChI=1S/C6H7NO3S/c7-5-3-1-2-4-6(5)11(8,9)10/h1-4H,7H2,(H,8,9,10)

SMILES Code: O=S(C1=CC=CC=C1N)(O)=O

Appearance: Solid powder

Purity: >98% (or refer to the Certificate of Analysis)

Shipping Condition: Shipped under ambient temperature as non-hazardous chemical. This product is stable enough for a few weeks during ordinary shipping and time spent in Customs.

Storage Condition: Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).

Solubility: Soluble in DMSO

Shelf Life: >3 years if stored properly

Drug Formulation: This drug may be formulated in DMSO

Stock Solution Storage: 0 - 4 C for short term (days to weeks), or -20 C for long term (months).

HS Tariff Code: 2934.99.03.00

More Info:

Biological target:
In vitro activity:
In vivo activity:

Preparing Stock Solutions

The following data is based on the product molecular weight 173.19 Batch specific molecular weights may vary from batch to batch due to the degree of hydration, which will affect the solvent volumes required to prepare stock solutions.

Recalculate based on batch purity %
Concentration / Solvent Volume / Mass 1 mg 5 mg 10 mg
1 mM 1.15 mL 5.76 mL 11.51 mL
5 mM 0.23 mL 1.15 mL 2.3 mL
10 mM 0.12 mL 0.58 mL 1.15 mL
50 mM 0.02 mL 0.12 mL 0.23 mL
Formulation protocol:
In vitro protocol:
In vivo protocol:

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1: Kale SS, Kunjir SM, Gawade RL, Puranik VG, Rajamohanan PR, Sanjayan GJ. Conformational modulation of peptide secondary structures using β-aminobenzenesulfonic acid. Chem Commun (Camb). 2014 Mar 18;50(22):2886-8. doi: 10.1039/c3cc48850k. Epub 2014 Feb 3. PubMed PMID: 24487479.

2: Kale SS, Priya G, Kotmale AS, Gawade RL, Puranik VG, Rajamohanan PR, Sanjayan GJ. Orthanilic acid-promoted reverse turn formation in peptides. Chem Commun (Camb). 2013 Mar 18;49(22):2222-4. doi: 10.1039/c3cc40522b. PubMed PMID: 23392615.

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