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Pharmaceutical impurity

Baloxavir Impurity 48

Baloxavir Impurity 48 is listed in the pharmaceutical impurity collection under CAS 2136287-61-9. Its represented structure has formula C24H33N3O8 and a calculated molecular weight of 491.54 g/mol.

2D chemical structure

O O N H O O O N N H O O O

Chemical identity

Catalog name
Baloxavir Impurity 48
Common name
Baloxavir Impurity 48
Chemical name
tert-butyl N-[2-[2-(2,2-dimethoxyethoxy)ethylcarbamoyl]-4-oxo-3-phenylmethoxy-1-pyridinyl]carbamate
CAS
2136287-61-9
SMILES
COC(COCCNC(=O)c1c(OCc2ccccc2)c(=O)ccn1NC(=O)OC(C)(C)C)OC
InChI
InChI=1S/C24H33N3O8/c1-24(2,3)35-23(30)26-27-13-11-18(28)21(34-15-17-9-7-6-8-10-17)20(27)22(29)25-12-14-33-16-19(31-4)32-5/h6-11,13,19H,12,14-16H2,1-5H3,(H,25,29)(H,26,30)
InChIKey
DQCSAWOUAXDTPT-UHFFFAOYSA-N
Associated API
Baloxavir

Record ID: A4e76e6dee32d

Computed properties

C24H33N3O8 Molecular formula
491.541 g/molMolecular weight
491.2268 DaMonoisotopic exact mass
126.35 ŲTopological polar surface area
2.2712 Calculated LogP (Wildman–Crippen)
128.0289 cm³/molMolar refractivity (Wildman–Crippen)
8 countHydrogen-bond acceptors
2 countHydrogen-bond donors

Descriptors are calculated from the displayed SMILES. Calculated LogP is not a measured partition coefficient or a pH-specific LogD.

Molecular descriptor profile

Descriptor radar

Mol. weight LogP TPSA HBA HBD Rotatable 25 50 75 100

Structural feature counts

0 4 8 12 Count H-bond acceptors H-bond donors Rotatable bonds Rings Aromatic rings Stereo centers

Element composition

C H N O 0 8 16 24 32 Number of atoms

Radar scale: 0–100 percentile within 25,771 distinct represented structures in this release, using the midpoint rank for ties. Larger values indicate a higher descriptor rank, not greater safety or toxicity. Element counts include hydrogen and combine isotopes under each element.

Radar values and percentile reference
DescriptorValuePercentile
Molecular weight491.54184.22
Calculated LogP (Wildman–Crippen)2.271247.58
Topological polar surface area126.3583.63
Hydrogen-bond acceptors887.87
Hydrogen-bond donors264.87
Rotatable bonds (strict)1293.56

Complete molecular descriptors

PropertyCalculated valueUnit / type
Molecular formulaC24H33N3O8dimensionless
Molecular weight491.541g/mol
Monoisotopic exact mass491.2268Da
Topological polar surface area126.35Ų
Calculated LogP (Wildman–Crippen)2.2712dimensionless
Molar refractivity (Wildman–Crippen)128.0289cm³/mol
Hydrogen-bond acceptors8count
Hydrogen-bond donors2count
Rotatable bonds (strict)12count
Heavy atoms35count
Heteroatoms11count
Rings2count
Aromatic rings2count
Aliphatic rings0count
Saturated rings0count
Aromatic heterocycles1count
Aliphatic heterocycles0count
Saturated heterocycles0count
Aromatic carbocycles1count
Aliphatic carbocycles0count
Fraction of sp³ carbon atoms0.4583fraction
Formal charge0e
Disconnected components1count
Isotopically specified atoms0count
Potential atom stereocenters0count
Unspecified atom stereocenters0count
Spiro atoms0count
Bridgehead atoms0count
Labute approximate surface area203.7845Ų
Valence electrons192count
Radical electrons0count
Bertz complexity1,013.6647index
Balaban J2.215index

Ring categories overlap and should not be summed. No toxicity result, PDE, HBEL or acceptable intake is inferred from these descriptors.

Toxicological services and resources for Baloxavir Impurity 48

Qualification and safety assessment of Baloxavir Impurity 48

Explore toxicological qualification of Baloxavir Impurity 48 and ICH M7 mutagenic impurity assessment of Baloxavir Impurity 48 for evaluation of this impurity in its pharmaceutical context.

Where data gaps need to be addressed, resources include read-across assessment for Baloxavir Impurity 48 and acceptable intake and limit justification for Baloxavir Impurity 48. The relevant approach depends on the available evidence, exposure and duration of use.

Related Altox services and technical resources

Identity sources and calculation method

Identifiers originate from the source catalogues and available public identity records. InChI and InChIKey on this page are generated from the displayed SMILES. RDKit validation checks the molecular representation; it does not independently verify every catalogue assignment.

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