BupropionQualityChecker
Bupropion
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.
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).
5. URS — user requirements
| ID | Requirement | Criticality | Acceptance criterion |
|---|---|---|---|
| URS-001 | The system shall accept an input.csv file for Bupropion with the exact columns listed in the “Input data contract” section. | High | A file with the correct header is processed without manual editing; missing mandatory columns produce FAIL/import error. |
| URS-002 | The system shall support execution without arguments in demo mode and execution with input.csv output.json for user data. | Medium | Both execution scenarios produce a predictable result or clear diagnostic error. |
| URS-003 | The 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. | High | Each controlled parameter receives a status and message; the result does not depend on hidden Excel formulas or ML. |
| URS-004 | The system shall preserve traceability between batch/lot, source values, applied rules and final verdict. | High | Output includes batch identifier, source values, parameter statuses and critical findings. |
| URS-005 | The system shall generate machine-readable output.json for LIMS/ELN/MES, batch record and QA/QC review. | High | JSON contains overall status, check array, warnings, failures and source-file reference. |
| URS-006 | The system shall support use in the client validation package: URS/FS, IQ/OQ preparation, installation and operational scenario checks. | High | The document, test scenarios and reproducible CSV/JSON flow are suitable for audit and internal approval. |
| URS-007 | The system shall clearly separate technical data errors from specification nonconformities. | Medium | Schema/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.
| # | Column | Type | Unit | Description | Sample | Control rule |
|---|---|---|---|---|---|---|
| 1 | BatchNumber | identifier | as specified | Batch Number | BUP-SUB-2026-001 | mandatory field; used for batch/lot traceability |
| 2 | Assay_Percent | decimal | % | Assay % | 99.2 | numeric value; compared with assay/purity limit from specification or method |
| 3 | Specific_Rotation | decimal | as specified | Specific Rotation | 2.5 | mandatory numeric value; rule comparison is performed by the utility |
| 4 | Melting_Point_Min | decimal | °C | Melting Point Min | 232 | mandatory numeric value; rule comparison is performed by the utility |
| 5 | Melting_Point_Max | decimal | °C | Melting Point Max | 234 | mandatory numeric value; rule comparison is performed by the utility |
| 6 | Impurity_A_Percent | decimal | % | Impurity A % | 0.05 | numeric value; compared with individual or total impurity limit |
| 7 | Impurity_B_Percent | decimal | % | Impurity B % | 0.04 | numeric value; compared with individual or total impurity limit |
| 8 | Total_Impurities_Percent | decimal | % | Total Impurities % | 0.15 | mandatory numeric value; rule comparison is performed by the utility |
| 9 | Loss_On_Drying_Percent | decimal | % | Loss On Drying % | 0.3 | mandatory numeric value; rule comparison is performed by the utility |
| 10 | Residual_Solvent_Ethanol_ppm | decimal | ppm | Residual Solvent Ethanol ppm | 800 | numeric value; checked as residual solvent against the applicable limit |
| 11 | Residual_Solvent_Methanol_ppm | decimal | ppm | Residual Solvent Methanol ppm | 200 | numeric value; checked as residual solvent against the applicable limit |
| 12 | Residual_Solvent_Toluene_ppm | decimal | ppm | Residual Solvent Toluene ppm | 100 | numeric value; checked as residual solvent against the applicable limit |
| 13 | Heavy_Metals_ppm | decimal | ppm | Heavy Metals ppm | 5 | numeric value; checked as elemental/metal impurity |
| 14 | Sulfated_Ash_Percent | decimal | % | Sulfated Ash % | 0.05 | mandatory numeric value; rule comparison is performed by the utility |
| 15 | Dissolution_1h_Percent | decimal | % | Dissolution 1h % | 0.0 | numeric value; dissolution/disintegration profile checked according to method |
| 16 | Dissolution_4h_Percent | decimal | % | Dissolution 4h % | 0.0 | numeric value; dissolution/disintegration profile checked according to method |
| 17 | Dissolution_8h_Percent | decimal | % | Dissolution 8h % | 0.0 | numeric value; dissolution/disintegration profile checked according to method |
| 18 | Dissolution_24h_Percent | decimal | % | Dissolution 24h % | 0.0 | numeric value; dissolution/disintegration profile checked according to method |
| 19 | Weight_Variation_RSD | decimal | as specified | Weight Variation RSD | 0.0 | mandatory numeric value; rule comparison is performed by the utility |
| 20 | Friability_Percent | decimal | % | Friability % | 0.0 | mandatory numeric value; rule comparison is performed by the utility |
| 21 | Microbial_Count_TAMC | decimal | as specified | Microbial Count TAMC | 20 | numeric value; compared with microbiological limits |
| 22 | Microbial_Count_TYMC | decimal | as specified | Microbial Count TYMC | 5 | numeric value; compared with microbiological limits |
| 23 | EColi_Detected | boolean / flag | 0/1 | EColi Detected | 0 | valid flag required; prohibited organisms and growth are normally expected as 0 / absent |
| 24 | Salmonella_Detected | boolean / flag | 0/1 | Salmonella Detected | 0 | valid 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
| ID | Function | Implementation description |
|---|---|---|
| FS-001 | CLI entry point | The executable BupropionQualityChecker.exe supports demo mode and input.csv output.json processing mode. |
| FS-002 | CSV parser | The import module reads CSV, validates header, column presence/order, value count and encoding. Decimal values are expected with a dot separator. |
| FS-003 | Field conversion | Each column is converted to the expected type: identifier, text, decimal number, date/time or boolean flag. |
| FS-004 | Domain rule engine | For Bupropion, explicit rules are applied: range, minimum, maximum, absence of prohibited flag, data completeness or calculation-based check. |
| FS-005 | Criticality handling | Critical violations produce FAIL; non-critical deviations and incomplete data produce WARNING; full conformance produces PASS. |
| FS-006 | JSON writer | output.json stores overall status, per-parameter results, source values, warnings, failures and diagnostic messages. |
| FS-007 | Integration contract | The CSV → JSON format is stable for invocation from LIMS/ELN/MES, scheduled task or wrapper service. |
| FS-008 | Error handling | Schema 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
| ID | Scenario | Expected result |
|---|---|---|
| TC-001 | Valid CSV with expected header and sample row | All rows are processed; output contains PASS/WARNING/FAIL and parameter-level detail. |
| TC-002 | A mandatory input.csv column is missing | Import is rejected or the row receives FAIL with schema reference. |
| TC-003 | A numeric field contains text or a blank value | Type conversion error is recorded; the result is not hidden as PASS. |
| TC-004 | A parameter is outside specification or critical limit | Critical parameters produce FAIL; non-critical deviations produce WARNING according to the rule. |
| TC-005 | Positive pathogen/microbiological flag or microbiological limit excursion | Critical FAIL is produced with the offending parameter. |
| TC-006 | Insufficient dissolution or excessive disintegration time | FAIL/WARNING is produced according to method criticality. |
| TC-007 | Residual solvent above applicable limit | FAIL 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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Open