BupropionQualityChecker

Bupropion

API assay biosimilars dissolution fixed-dose combinations generics impurities market map
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Bupropion Quality Checker — Antidepressant (Ph. Eur., USP)

ℹ️ The utility checks assay, specific rotation, impurities, dissolution profile (for SR/XL), residual solvents.
ℹ️ Does not use machine learning — rule-based logic only.
⚠️ CRITICAL! Dissolution profile (seizure risk with rapid release), Toluene ≤890 ppm!

Usage:
BupropionQualityChecker.exe → demo mode
BupropionQualityChecker.exe input.csv output.json → evaluate data

Input format:
BatchNumber,Assay_Percent,Specific_Rotation,Melting_Point_Min,Melting_Point_Max,Impurity_A_Percent,Impurity_B_Percent,Total_Impurities_Percent,Loss_On_Drying_Percent,Residual_Solvent_Ethanol_ppm,Residual_Solvent_Methanol_ppm,Residual_Solvent_Toluene_ppm,Heavy_Metals_ppm,Sulfated_Ash_Percent,Dissolution_1h_Percent,Dissolution_4h_Percent,Dissolution_8h_Percent,Dissolution_24h_Percent,Weight_Variation_RSD,Friability_Percent,Microbial_Count_TAMC,Microbial_Count_TYMC,EColi_Detected,Salmonella_Detected

Example:
BUP-SUB-2026-001,99.2,2.5,232,234,0.05,0.04,0.15,0.3,800,200,100,5,0.05,0.0,0.0,0.0,0.0,0.0,0.0,20,5,0,0

— WHY IS THIS NEEDED?
Bupropion — antidepressant, also used for smoking cessation:
• Often released in sustained-release forms (SR, XL) to reduce peak concentration and side effect risk (seizures)
• Dissolution profile control critical: too rapid release is dangerous
• Synthesis may involve toluene and other organic solvents
• Specific impurities include chlorinated derivatives
⚠️ CRITICAL:
• Assay: 98–102%
• Specific Rotation: depends on form (racemate or enantiomer), usually wide range or near zero for racemate
• Melting Point: 230–235°C
• Total Impurities: ≤ 0.5%
• Toluene: ≤ 890 ppm (ICH Q3C Class 2)
• Dissolution (for SR/XL): Strict control at time points (1h, 4h, 8h, 24h) to ensure slow release
• Microbiology: standard limits
⚠️ Note: Utility adapted for dissolution profile check. If dissolution data absent (0), check skipped (for substance). For SR/XL finished forms, deviation from dissolution profile is critical defect as it affects drug safety (risk of epileptic seizures due to rapid absorption overdose).

input.csv

BatchNumber,Assay_Percent,Specific_Rotation,Melting_Point_Min,Melting_Point_Max,Impurity_A_Percent,Impurity_B_Percent,Total_Impurities_Percent,Loss_On_Drying_Percent,Residual_Solvent_Ethanol_ppm,Residual_Solvent_Methanol_ppm,Residual_Solvent_Toluene_ppm,Heavy_Metals_ppm,Sulfated_Ash_Percent,Dissolution_1h_Percent,Dissolution_4h_Percent,Dissolution_8h_Percent,Dissolution_24h_Percent,Weight_Variation_RSD,Friability_Percent,Microbial_Count_TAMC,Microbial_Count_TYMC,EColi_Detected,Salmonella_Detected
BUP-SUB-2026-001,99.2,2.5,232,234,0.05,0.04,0.15,0.3,800,200,100,5,0.05,0.0,0.0,0.0,0.0,0.0,0.0,20,5,0,0

URS & FS — user requirements and functional specification

This document defines user requirements and functional specification for the quality-control utility. It supports deployment discussion, IQ/OQ preparation and QC workflow integration.

Utility: BupropionQualityCheckerAPI / object: BupropionCategory: Global API

1. Scope

The Bupropion Quality Checker utility is used for Bupropion. The actual input.csv is the source of truth for the input structure; control criteria are defined by the executable and the domain description.

The utility does not use machine learning; decisions are produced by deterministic rules.

Categories: Global API

Tags: API, assay, biosimilars, dissolution, fixed-dose combinations, generics, impurities, market map, microbiology, residual solvents

2. Execution modes

BupropionQualityChecker.exe                            → demo mode
BupropionQualityChecker.exe input.csv output.json      → evaluate data

3. Key controlled areas

  • assay / content
  • purity and impurities
  • dissolution / disintegration
  • residual solvents
  • microbiology and pathogens
  • heavy metals / elemental impurities
  • pH and physicochemical parameters

4. Domain limits and critical parameters

  • ⚠️ CRITICAL! Dissolution profile (seizure risk with rapid release), Toluene ≤890 ppm!
  • Dissolution profile control critical: too rapid release is dangerous
  • Synthesis may involve toluene and other organic solvents
  • Specific impurities include chlorinated derivatives
  • ⚠️ CRITICAL:
  • Assay: 98–102%
  • Specific Rotation: depends on form (racemate or enantiomer), usually wide range or near zero for racemate
  • Melting Point: 230–235°C
  • Total Impurities: ≤ 0.5%
  • Toluene: ≤ 890 ppm (ICH Q3C Class 2)
  • Dissolution (for SR/XL): Strict control at time points (1h, 4h, 8h, 24h) to ensure slow release
  • Microbiology: standard limits
  • ⚠️ Note: Utility adapted for dissolution profile check. If dissolution data absent (0), check skipped (for substance). For SR/XL finished forms, deviation from dissolution profile is critical defect as it affects drug safety (risk of epileptic seizures due to rapid absorption overdose).
Limits stated in the description must be verified against the current approved specification, pharmacopoeial monograph and registration dossier before production use.

5. URS — user requirements

IDRequirementCriticalityAcceptance criterion
URS-001The system shall accept an input.csv file for Bupropion with the exact columns listed in the “Input data contract” section.HighA file with the correct header is processed without manual editing; missing mandatory columns produce FAIL/import error.
URS-002The system shall support execution without arguments in demo mode and execution with input.csv output.json for user data.MediumBoth execution scenarios produce a predictable result or clear diagnostic error.
URS-003The system shall perform rule-based controls for: assay / content, purity and impurities, dissolution / disintegration, residual solvents, microbiology and pathogens, heavy metals / elemental impurities, pH and physicochemical parameters.HighEach controlled parameter receives a status and message; the result does not depend on hidden Excel formulas or ML.
URS-004The system shall preserve traceability between batch/lot, source values, applied rules and final verdict.HighOutput includes batch identifier, source values, parameter statuses and critical findings.
URS-005The system shall generate machine-readable output.json for LIMS/ELN/MES, batch record and QA/QC review.HighJSON contains overall status, check array, warnings, failures and source-file reference.
URS-006The system shall support use in the client validation package: URS/FS, IQ/OQ preparation, installation and operational scenario checks.HighThe document, test scenarios and reproducible CSV/JSON flow are suitable for audit and internal approval.
URS-007The system shall clearly separate technical data errors from specification nonconformities.MediumSchema/type errors are not mixed with pharmacopoeial deviations and are reported separately.

6. input.csv data contract

The source of truth for the input schema is the actual input.csv header. Column names are technical identifiers and are not translated.

#ColumnTypeUnitDescriptionSampleControl rule
1BatchNumberidentifieras specifiedBatch NumberBUP-SUB-2026-001mandatory field; used for batch/lot traceability
2Assay_Percentdecimal%Assay %99.2numeric value; compared with assay/purity limit from specification or method
3Specific_Rotationdecimalas specifiedSpecific Rotation2.5mandatory numeric value; rule comparison is performed by the utility
4Melting_Point_Mindecimal°CMelting Point Min232mandatory numeric value; rule comparison is performed by the utility
5Melting_Point_Maxdecimal°CMelting Point Max234mandatory numeric value; rule comparison is performed by the utility
6Impurity_A_Percentdecimal%Impurity A %0.05numeric value; compared with individual or total impurity limit
7Impurity_B_Percentdecimal%Impurity B %0.04numeric value; compared with individual or total impurity limit
8Total_Impurities_Percentdecimal%Total Impurities %0.15mandatory numeric value; rule comparison is performed by the utility
9Loss_On_Drying_Percentdecimal%Loss On Drying %0.3mandatory numeric value; rule comparison is performed by the utility
10Residual_Solvent_Ethanol_ppmdecimalppmResidual Solvent Ethanol ppm800numeric value; checked as residual solvent against the applicable limit
11Residual_Solvent_Methanol_ppmdecimalppmResidual Solvent Methanol ppm200numeric value; checked as residual solvent against the applicable limit
12Residual_Solvent_Toluene_ppmdecimalppmResidual Solvent Toluene ppm100numeric value; checked as residual solvent against the applicable limit
13Heavy_Metals_ppmdecimalppmHeavy Metals ppm5numeric value; checked as elemental/metal impurity
14Sulfated_Ash_Percentdecimal%Sulfated Ash %0.05mandatory numeric value; rule comparison is performed by the utility
15Dissolution_1h_Percentdecimal%Dissolution 1h %0.0numeric value; dissolution/disintegration profile checked according to method
16Dissolution_4h_Percentdecimal%Dissolution 4h %0.0numeric value; dissolution/disintegration profile checked according to method
17Dissolution_8h_Percentdecimal%Dissolution 8h %0.0numeric value; dissolution/disintegration profile checked according to method
18Dissolution_24h_Percentdecimal%Dissolution 24h %0.0numeric value; dissolution/disintegration profile checked according to method
19Weight_Variation_RSDdecimalas specifiedWeight Variation RSD0.0mandatory numeric value; rule comparison is performed by the utility
20Friability_Percentdecimal%Friability %0.0mandatory numeric value; rule comparison is performed by the utility
21Microbial_Count_TAMCdecimalas specifiedMicrobial Count TAMC20numeric value; compared with microbiological limits
22Microbial_Count_TYMCdecimalas specifiedMicrobial Count TYMC5numeric value; compared with microbiological limits
23EColi_Detectedboolean / flag0/1EColi Detected0valid flag required; prohibited organisms and growth are normally expected as 0 / absent
24Salmonella_Detectedboolean / flag0/1Salmonella Detected0valid flag required; prohibited organisms and growth are normally expected as 0 / absent

CSV example

BatchNumber,Assay_Percent,Specific_Rotation,Melting_Point_Min,Melting_Point_Max,Impurity_A_Percent,Impurity_B_Percent,Total_Impurities_Percent,Loss_On_Drying_Percent,Residual_Solvent_Ethanol_ppm,Residual_Solvent_Methanol_ppm,Residual_Solvent_Toluene_ppm,Heavy_Metals_ppm,Sulfated_Ash_Percent,Dissolution_1h_Percent,Dissolution_4h_Percent,Dissolution_8h_Percent,Dissolution_24h_Percent,Weight_Variation_RSD,Friability_Percent,Microbial_Count_TAMC,Microbial_Count_TYMC,EColi_Detected,Salmonella_Detected
BUP-SUB-2026-001,99.2,2.5,232,234,0.05,0.04,0.15,0.3,800,200,100,5,0.05,0.0,0.0,0.0,0.0,0.0,0.0,20,5,0,0

7. FS — functional specification

IDFunctionImplementation description
FS-001CLI entry pointThe executable BupropionQualityChecker.exe supports demo mode and input.csv output.json processing mode.
FS-002CSV parserThe import module reads CSV, validates header, column presence/order, value count and encoding. Decimal values are expected with a dot separator.
FS-003Field conversionEach column is converted to the expected type: identifier, text, decimal number, date/time or boolean flag.
FS-004Domain rule engineFor Bupropion, explicit rules are applied: range, minimum, maximum, absence of prohibited flag, data completeness or calculation-based check.
FS-005Criticality handlingCritical violations produce FAIL; non-critical deviations and incomplete data produce WARNING; full conformance produces PASS.
FS-006JSON writeroutput.json stores overall status, per-parameter results, source values, warnings, failures and diagnostic messages.
FS-007Integration contractThe CSV → JSON format is stable for invocation from LIMS/ELN/MES, scheduled task or wrapper service.
FS-008Error handlingSchema error, missing file, non-numeric value or JSON write failure returns diagnosable error without silent PASS.

8. output.json contract

The output file must be suitable for automated processing, audit review and correlation with the source input.csv row.

{
  "utility": "BupropionQualityChecker",
  "api": "Bupropion",
  "batchNumber": "BUP-SUB-2026-001",
  "overallStatus": "PASS|WARNING|FAIL",
  "checkedAtUtc": "2026-05-18T00:00:00Z",
  "checks": [
    {
      "parameter": "BatchNumber",
      "value": "BUP-SUB-2026-001",
      "unit": "as specified",
      "status": "PASS|WARNING|FAIL",
      "message": "Rule-based check result"
    },
    {
      "parameter": "Assay_Percent",
      "value": "99.2",
      "unit": "%",
      "status": "PASS|WARNING|FAIL",
      "message": "Rule-based check result"
    },
    {
      "parameter": "Specific_Rotation",
      "value": "2.5",
      "unit": "as specified",
      "status": "PASS|WARNING|FAIL",
      "message": "Rule-based check result"
    },
    {
      "parameter": "Melting_Point_Min",
      "value": "232",
      "unit": "°C",
      "status": "PASS|WARNING|FAIL",
      "message": "Rule-based check result"
    },
    {
      "parameter": "Melting_Point_Max",
      "value": "234",
      "unit": "°C",
      "status": "PASS|WARNING|FAIL",
      "message": "Rule-based check result"
    },
    {
      "parameter": "Impurity_A_Percent",
      "value": "0.05",
      "unit": "%",
      "status": "PASS|WARNING|FAIL",
      "message": "Rule-based check result"
    },
    {
      "parameter": "Impurity_B_Percent",
      "value": "0.04",
      "unit": "%",
      "status": "PASS|WARNING|FAIL",
      "message": "Rule-based check result"
    },
    {
      "parameter": "Total_Impurities_Percent",
      "value": "0.15",
      "unit": "%",
      "status": "PASS|WARNING|FAIL",
      "message": "Rule-based check result"
    }
  ],
  "criticalFindings": [],
  "sourceFile": "input.csv"
}

9. OQ/PQ test scenarios

IDScenarioExpected result
TC-001Valid CSV with expected header and sample rowAll rows are processed; output contains PASS/WARNING/FAIL and parameter-level detail.
TC-002A mandatory input.csv column is missingImport is rejected or the row receives FAIL with schema reference.
TC-003A numeric field contains text or a blank valueType conversion error is recorded; the result is not hidden as PASS.
TC-004A parameter is outside specification or critical limitCritical parameters produce FAIL; non-critical deviations produce WARNING according to the rule.
TC-005Positive pathogen/microbiological flag or microbiological limit excursionCritical FAIL is produced with the offending parameter.
TC-006Insufficient dissolution or excessive disintegration timeFAIL/WARNING is produced according to method criticality.
TC-007Residual solvent above applicable limitFAIL is produced with solvent name and measured value.

10. QA/QC, CSV and change control

  • Before production use, the client records executable version, checksum, specification/monograph version, test CSV, expected JSON and IQ/OQ results.
  • Column names must not be changed without updating the validator and test scenarios.
  • The source CSV, output.json and utility version should be stored together as an evidence package.
  • Any change in control rules must go through change control and repeated OQ scenario verification.

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