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Impurities and reference standards

2-Hydroxy cephalexin

Also known as Cefradine EP Impurity E, 2-Hydroxycephalexin, (6R,7R)-7-[[(2R)-2-amino-2-(2-hydroxyphenyl)acetyl]amino]-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid

CAS 215172-75-1Formula C16H17N3O5SMolar mass 363.40 g/mol
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2-Hydroxy cephalexin chemical structure, C16H17N3O5S, CAS 215172-75-1
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
215172-75-1
Formula
C16H17N3O5S
Molar mass
363.40 g/mol
HS code
294190
Category
Impurities and reference standards

What is 2-Hydroxy cephalexin?

Plain description, key identifiers and synonyms

2-Hydroxy cephalexin is a chemical substance with the molecular formula C16H17N3O5S and a molar mass of 363.40 g/mol. Its CAS registry number is 215172-75-1. The IUPAC name is (6R,7R)-7-[[(2R)-2-amino-2-(2-hydroxyphenyl)acetyl]amino]-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(6R,7R)-7-[[(2R)-2-amino-2-(2-hydroxyphenyl)acetyl]amino]-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
CAS number
215172-75-1
Molecular formula
C16H17N3O5S
UNII
EKZ86TVS3U
InChIKey
CUXVKLLSHPANDN-UEKVPHQBSA-N
InChI
InChI=1S/C16H17N3O5S/c1-7-6-25-15-11(14(22)19(15)12(7)16(23)24)18-13(21)10(17)8-4-2-3-5-9(8)20/h2-5,10-11,15,20H,6,17H2,1H3,(H,18,21)(H,23,24)/t10-,11-,15-/m1/s1
Canonical SMILES
CC1=C(C(=O)O)N2C(=O)C(NC(=O)C(N)c3ccccc3O)C2SC1
Isomeric SMILES
CC1=C(N2[C@@H]([C@@H](C2=O)NC(=O)[C@@H](C3=CC=CC=C3O)N)SC1)C(=O)O

Synonyms

  • Cefradine EP Impurity E
  • 2-Hydroxycephalexin
  • (6R,7R)-7-[[(2R)-2-amino-2-(2-hydroxyphenyl)acetyl]amino]-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
  • (6R,7R)-7-(((2R)-2-Amino-2-(2-hydroxyphenyl)acetyl)amino)-3-methyl-8-oxo-5-thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylic acid
  • (6R,7R)-7-(((2R)-Amino(2-hydroxyphenyl)acetyl)amino)-3-methyl-8-oxo-5-thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylic acid
  • 5-Thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylic acid, 7-(((2R)-2-amino-2-(2-hydroxyphenyl)acetyl)amino)-3-methyl-8-oxo-, (6R,7R)-
  • Cefradine impurity E
  • (6R,7R)-7-((R)-2-amino-2-(2-hydroxyphenyl)acetamido)-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
363.40 g/molcalc.
Exact mass
363.0889 Dacalc.
LogP (octanol/water)
0.15calc.
Topological polar surface area
133 Ųcalc.
Hydrogen bond donors
4calc.
Hydrogen bond acceptors
6calc.
Rotatable bonds
4calc.
Heavy atoms
25calc.
Rings
3calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0.31calc.
Formal charge
0calc.
Stereocentres
3calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, O=C(Cc1ccccc1)NC1C(=O)N2C=CCSC12

O=C(Cc1ccccc1)NC1C(=O)N2C=CCSC12

3 rings, 19 atoms.

98 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

No GHS hazard classification is recorded for this substance yet. That does not mean it is harmless.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

2-Hydroxy cephalexin suppliers

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2-Hydroxy cephalexin price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Applications are not documented for this substance yet. Suppliers often describe uses on their product pages, linked in the suppliers list above.

Regulatory status

Inventories, regulations and trade controls that list this substance

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code 2-Hydroxy cephalexin is traded under.

HS 2941.90Indicative HS code

Antibiotics, other

World exports in 2024
$6.39B
+2.3% vs 2023, imports $6.97B
2019 to 2024
Top exporters
  1. China39.7%
  2. United States11.3%
  3. Switzerland * partner reported10.9%
Top importers
  1. Italy15.0%
  2. India * partner reported12.0%
  3. China8.7%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for 2-Hydroxy cephalexin is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about 2-Hydroxy cephalexin, based on the data on this page

What is 2-Hydroxy cephalexin?

2-Hydroxy cephalexin is a chemical substance with the molecular formula C16H17N3O5S and a molar mass of 363.40 g/mol. Its CAS registry number is 215172-75-1. The IUPAC name is (6R,7R)-7-[[(2R)-2-amino-2-(2-hydroxyphenyl)acetyl]amino]-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid.

What is the CAS number of 2-Hydroxy cephalexin?

The CAS registry number of 2-Hydroxy cephalexin is 215172-75-1.

What is the molecular formula and weight of 2-Hydroxy cephalexin?

The molecular formula of 2-Hydroxy cephalexin is C16H17N3O5S and its molar mass is 363.40 g/mol.

Is 2-Hydroxy cephalexin hazardous?

No GHS hazard classification for 2-Hydroxy cephalexin is recorded on CompoundList yet. That does not prove it is safe. Always read the supplier safety data sheet.

What is the HS code of 2-Hydroxy cephalexin?

2-Hydroxy cephalexin is usually classified under HS code 294190 (Antibiotics, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy 2-Hydroxy cephalexin?

Post a free request on CompoundList and suppliers of 2-Hydroxy cephalexin will send you quotes. Your contact details stay private until you accept a quote.

What is the price of 2-Hydroxy cephalexin?

Suppliers quote 2-Hydroxy cephalexin on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle 2-Hydroxy cephalexin

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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