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Key facts

What buyers check first

Formula
C43H63NO11
Molar mass
769.97 g/mol
EC number
811-481-9
HS code
293220
Category
Impurities and reference standards

What is Selamectin impurity B?

Plain description, key identifiers and synonyms

Selamectin impurity B is a chemical substance with the molecular formula C43H63NO11 and a molar mass of 769.97 g/mol. The IUPAC name is (1S,4S,6R,8S,20R,24S)-6'-cyclohexyl-24-hydroxy-21-hydroxyimino-12-[(2R)-5-hydroxy-4-methoxy-6-methyloxan-2-yl]oxy-5',11,13,22-tetramethylspiro[3,7,19-trioxatetracyclo[15.6.1.14,8.020,24]pentacosa-10,14,16,22-tetraene-6,2'-oxane]-2-one.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(1S,4S,6R,8S,20R,24S)-6'-cyclohexyl-24-hydroxy-21-hydroxyimino-12-[(2R)-5-hydroxy-4-methoxy-6-methyloxan-2-yl]oxy-5',11,13,22-tetramethylspiro[3,7,19-trioxatetracyclo[15.6.1.14,8.020,24]pentacosa-10,14,16,22-tetraene-6,2'-oxane]-2-one
EC number
811-481-9
Molecular formula
C43H63NO11
InChIKey
AFJYYKSVHJGXSN-FYVXNYHDSA-N
InChI
InChI=1S/C43H63NO11/c1-24-11-10-14-30-23-50-40-36(44-48)27(4)19-33(43(30,40)47)41(46)52-32-20-31(16-15-25(2)38(24)53-35-21-34(49-6)37(45)28(5)51-35)54-42(22-32)18-17-26(3)39(55-42)29-12-8-7-9-13-29/h10-11,14-15,19,24,26,28-29,31-35,37-40,45,47-48H,7-9,12-13,16-18,20-23H2,1-6H3/t24?,26?,28?,31-,32-,33+,34?,35-,37?,38?,39?,40+,42+,43+/m0/s1
Canonical SMILES
COC1CC(OC2C(C)=CCC3CC(CC4(CCC(C)C(C5CCCCC5)O4)O3)OC(=O)C3C=C(C)C(=NO)C4OCC(=CC=CC2C)C34O)OC(C)C1O
Isomeric SMILES
CC1CC[C@]2(C[C@@H]3C[C@@H](O2)CC=C(C(C(C=CC=C4CO[C@H]5[C@@]4([C@H](C=C(C5=NO)C)C(=O)O3)O)C)O[C@H]6CC(C(C(O6)C)O)OC)C)OC1C7CCCCC7

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
769.97 g/molcalc.
Exact mass
769.4401 Dacalc.
LogP (octanol/water)
6.07calc.
Topological polar surface area
154.7 Ųcalc.
Hydrogen bond donors
3calc.
Hydrogen bond acceptors
12calc.
Rotatable bonds
4calc.
Heavy atoms
55calc.
Rings
7calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.77calc.
Formal charge
0calc.
Stereocentres
14calc.
Lipinski rule of five
Fails (3 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, N=C1C=CC2C(=O)OC3CC(CC=CC(OC4CCCCO4)CC=CC=C4COC1C42)OC1(CCCC(C2CCCCC2)O1)C3

N=C1C=CC2C(=O)OC3CC(CC=CC(OC4CCCCO4)CC=CC=C4COC1C42)OC1(CCCC(C2CCCCC2)O1)C3

7 rings, 45 atoms.

16 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Warning
GHS08: Serious health hazard
Serious health hazard
GHS09: Hazardous to the environment
Hazardous to the environment

Hazard statements

  • H361Suspected of damaging fertility or the unborn child.
  • H400Very toxic to aquatic life.
Precautionary statements (7)
  • P203Obtain, read and follow all safety instructions before use.
  • P273Avoid release to the environment.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P318If exposed or concerned, get medical advice.
  • P391Collect spillage.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.

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

Full safety data and first aid

Selamectin impurity B suppliers

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Selamectin impurity B 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 Selamectin impurity B is traded under.

HS 2932.20Indicative HS code

Lactones

World exports in 2024
$1.97B
−4.7% vs 2023, imports $2.07B
2019 to 2024
Top exporters
  1. China56.3%
  2. India * partner reported7.4%
  3. Germany7.3%
Top importers
  1. United States14.2%
  2. India * partner reported13.5%
  3. Brazil8.5%

* Partner reported figures, a lower bound.

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

The HS code shown for Selamectin impurity B is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Selamectin impurity B, based on the data on this page

What is Selamectin impurity B?

Selamectin impurity B is a chemical substance with the molecular formula C43H63NO11 and a molar mass of 769.97 g/mol.

What is the molecular formula and weight of Selamectin impurity B?

The molecular formula of Selamectin impurity B is C43H63NO11 and its molar mass is 769.97 g/mol.

Is Selamectin impurity B hazardous?

Selamectin impurity B carries the GHS signal word "Warning". Main hazards: suspected of damaging fertility or the unborn child, very toxic to aquatic life. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Selamectin impurity B?

Selamectin impurity B is usually classified under HS code 293220 (Lactones). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Selamectin impurity B?

Post a free request on CompoundList and suppliers of Selamectin impurity B will send you quotes. Your contact details stay private until you accept a quote.

What is the price of Selamectin impurity B?

Suppliers quote Selamectin impurity B 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 Selamectin impurity B

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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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