CyproteroneAcetateEthinylestradiolQualityChecker
Cyproterone Acetate Ethinylestradiol
Cyproterone Acetate + Ethinylestradiol Quality Checker — Combined Tablets (Diane-35, Androcur) (Ph. Eur., ICH Q6A)
ℹ️ The utility checks content of both active substances, weight variation, disintegration, dissolution, impurities, microbiology (including pathogens), friability.
ℹ️ Does not use machine learning — rule-based logic only.
⚠️ Critical for COC (combined oral contraceptives) and antiandrogenic drug production. Strict impurity and dissolution control is mandatory!
Usage:
CyproteroneAcetateEthinylestradiolQualityChecker.exe → demo mode (console output)
CyproteroneAcetateEthinylestradiolQualityChecker.exe input.csv output.json → evaluate your data
Input format:
BatchNumber,CyproteroneAcetateContent,EthinylestradiolContent,WeightVariationRSD,DisintegrationTime,DissolutionCyproterone,DissolutionEthinylestradiol,ImpurityCyproterone,ImpurityEthinylestradiol,HeavyMetals,TAMC,TYMC,EColiDetected,SalmonellaDetected,EthanolPPM,AcetonePPM,Friability
Example (EColiDetected/SalmonellaDetected: 0=not detected, 1=detected):
CAEE-2026-001,98.5,99.2,3.5,15.0,85.0,87.0,0.3,0.2,10,500,50,0,0,800,500,0.6
— WHY IS THIS NEEDED?
Combined tablets (cyproterone acetate + ethinylestradiol) — highly effective preparations for:
• Contraception (COCs: Diane-35, Belara, Siluet)
• Treatment of androgen-dependent conditions in women (acne, seborrhea, hirsutism)
• Therapy of hypersexuality and paraphilias in men (Androcur)
⚠️ CRITICAL:
• Dissolution of both components ≥80% — ensures bioavailability and efficacy
• Impurities ≤0.5% — hormonal preparations require highest purity (risk of side effects)
• Absence of pathogens (E. coli, Salmonella) — mandatory for oral preparations
• Weight variation (RSD ≤5.0%) — ensures accurate dose in each tablet
Critical parameters:
• CA content: 90.0–110.0% of declared
• EE content: 90.0–110.0% of declared
• Weight variation (RSD): ≤5.0%
• Disintegration: ≤30 minutes
• CA dissolution: ≥80% (at 30 min)
• EE dissolution: ≥80% (at 30 min)
• CA impurity (6-chloro-17-acetoxy-pregna-4,6-dien-3,20-dione): ≤0.5%
• EE impurity (17-epimer): ≤0.5%
• Heavy metals: ≤20 ppm
• Microbiology: TAMC ≤1000 CFU/g, TYMC ≤100 CFU/g
• Absence of E. coli and Salmonella
• Friability: ≤1.0% (for uncoated tablets)
• Residual solvents: ethanol ≤5000 ppm, acetone ≤5000 ppm
⚠️ Note: Dissolution is tested separately for each component (different HPLC methods). Utility evaluates results after proper testing!
input.csv
BatchNumber,CyproteroneAcetateContent,EthinylestradiolContent,WeightVariationRSD,DisintegrationTime,DissolutionCyproterone,DissolutionEthinylestradiol,ImpurityCyproterone,ImpurityEthinylestradiol,HeavyMetals,TAMC,TYMC,EColiDetected,SalmonellaDetected,EthanolPPM,AcetonePPM,Friability CAEE-2026-001,98.5,99.2,3.5,15.0,85.0,87.0,0.3,0.2,10,500,50,0,0,800,500,0.6
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 Cyproterone Acetate Ethinylestradiol Quality Checker utility is used for Cyproterone Acetate Ethinylestradiol. 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: Contraceptives
Tags: assay, contraceptives, dissolution, fixed-dose combinations, heavy metals, hormones, impurities, microbiology, radiopharma, residual solvents, solid dosage
2. Execution modes
CyproteroneAcetateEthinylestradiolQualityChecker.exe → demo mode (console output) CyproteroneAcetateEthinylestradiolQualityChecker.exe input.csv output.json → evaluate your 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 for COC (combined oral contraceptives) and antiandrogenic drug production. Strict impurity and dissolution control is mandatory!
- ⚠️ CRITICAL:
- Dissolution of both components ≥80% — ensures bioavailability and efficacy
- Impurities ≤0.5% — hormonal preparations require highest purity (risk of side effects)
- Absence of pathogens (E. coli, Salmonella) — mandatory for oral preparations
- Weight variation (RSD ≤5.0%) — ensures accurate dose in each tablet
- Critical parameters:
- CA content: 90.0–110.0% of declared
- EE content: 90.0–110.0% of declared
- Weight variation (RSD): ≤5.0%
- Disintegration: ≤30 minutes
- CA dissolution: ≥80% (at 30 min)
- EE dissolution: ≥80% (at 30 min)
- CA impurity (6-chloro-17-acetoxy-pregna-4,6-dien-3,20-dione): ≤0.5%
- EE impurity (17-epimer): ≤0.5%
- Heavy metals: ≤20 ppm
- Microbiology: TAMC ≤1000 CFU/g, TYMC ≤100 CFU/g
- Absence of E. coli and Salmonella
- Friability: ≤1.0% (for uncoated tablets)
- Residual solvents: ethanol ≤5000 ppm, acetone ≤5000 ppm
- ⚠️ Note: Dissolution is tested separately for each component (different HPLC methods). Utility evaluates results after proper testing!
5. URS — user requirements
| ID | Requirement | Criticality | Acceptance criterion |
|---|---|---|---|
| URS-001 | The system shall accept an input.csv file for Cyproterone Acetate Ethinylestradiol 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 | CAEE-2026-001 | mandatory field; used for batch/lot traceability |
| 2 | CyproteroneAcetateContent | decimal | as specified | Cyproterone Acetate Content | 98.5 | numeric value; compared with assay/purity limit from specification or method |
| 3 | EthinylestradiolContent | decimal | as specified | Ethinylestradiol Content | 99.2 | numeric value; compared with assay/purity limit from specification or method |
| 4 | WeightVariationRSD | decimal | as specified | Weight Variation RSD | 3.5 | mandatory numeric value; rule comparison is performed by the utility |
| 5 | DisintegrationTime | decimal | min | Disintegration Time | 15.0 | numeric value; dissolution/disintegration profile checked according to method |
| 6 | DissolutionCyproterone | decimal | as specified | Dissolution Cyproterone | 85.0 | numeric value; dissolution/disintegration profile checked according to method |
| 7 | DissolutionEthinylestradiol | decimal | as specified | Dissolution Ethinylestradiol | 87.0 | numeric value; dissolution/disintegration profile checked according to method |
| 8 | ImpurityCyproterone | decimal | as specified | Impurity Cyproterone | 0.3 | numeric value; compared with individual or total impurity limit |
| 9 | ImpurityEthinylestradiol | decimal | as specified | Impurity Ethinylestradiol | 0.2 | numeric value; compared with individual or total impurity limit |
| 10 | HeavyMetals | decimal | as specified | Heavy Metals | 10 | numeric value; checked as elemental/metal impurity |
| 11 | TAMC | decimal | as specified | TAMC | 500 | numeric value; compared with microbiological limits |
| 12 | TYMC | decimal | as specified | TYMC | 50 | numeric value; compared with microbiological limits |
| 13 | EColiDetected | boolean / flag | 0/1 | EColi Detected | 0 | valid flag required; prohibited organisms and growth are normally expected as 0 / absent |
| 14 | SalmonellaDetected | boolean / flag | 0/1 | Salmonella Detected | 0 | valid flag required; prohibited organisms and growth are normally expected as 0 / absent |
| 15 | EthanolPPM | decimal | ppm | Ethanol PPM | 800 | numeric value; checked as residual solvent against the applicable limit |
| 16 | AcetonePPM | decimal | ppm | Acetone PPM | 500 | numeric value; checked as residual solvent against the applicable limit |
| 17 | Friability | decimal | as specified | Friability | 0.6 | mandatory numeric value; rule comparison is performed by the utility |
CSV example
BatchNumber,CyproteroneAcetateContent,EthinylestradiolContent,WeightVariationRSD,DisintegrationTime,DissolutionCyproterone,DissolutionEthinylestradiol,ImpurityCyproterone,ImpurityEthinylestradiol,HeavyMetals,TAMC,TYMC,EColiDetected,SalmonellaDetected,EthanolPPM,AcetonePPM,Friability CAEE-2026-001,98.5,99.2,3.5,15.0,85.0,87.0,0.3,0.2,10,500,50,0,0,800,500,0.6
7. FS — functional specification
| ID | Function | Implementation description |
|---|---|---|
| FS-001 | CLI entry point | The executable CyproteroneAcetateEthinylestradiolQualityChecker.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 Cyproterone Acetate Ethinylestradiol, 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": "CyproteroneAcetateEthinylestradiolQualityChecker",
"api": "Cyproterone Acetate Ethinylestradiol",
"batchNumber": "CAEE-2026-001",
"overallStatus": "PASS|WARNING|FAIL",
"checkedAtUtc": "2026-05-18T00:00:00Z",
"checks": [
{
"parameter": "BatchNumber",
"value": "CAEE-2026-001",
"unit": "as specified",
"status": "PASS|WARNING|FAIL",
"message": "Rule-based check result"
},
{
"parameter": "CyproteroneAcetateContent",
"value": "98.5",
"unit": "as specified",
"status": "PASS|WARNING|FAIL",
"message": "Rule-based check result"
},
{
"parameter": "EthinylestradiolContent",
"value": "99.2",
"unit": "as specified",
"status": "PASS|WARNING|FAIL",
"message": "Rule-based check result"
},
{
"parameter": "WeightVariationRSD",
"value": "3.5",
"unit": "as specified",
"status": "PASS|WARNING|FAIL",
"message": "Rule-based check result"
},
{
"parameter": "DisintegrationTime",
"value": "15.0",
"unit": "min",
"status": "PASS|WARNING|FAIL",
"message": "Rule-based check result"
},
{
"parameter": "DissolutionCyproterone",
"value": "85.0",
"unit": "as specified",
"status": "PASS|WARNING|FAIL",
"message": "Rule-based check result"
},
{
"parameter": "DissolutionEthinylestradiol",
"value": "87.0",
"unit": "as specified",
"status": "PASS|WARNING|FAIL",
"message": "Rule-based check result"
},
{
"parameter": "ImpurityCyproterone",
"value": "0.3",
"unit": "as specified",
"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.
Included in packages
Contraceptives QC Suite
Quality-control package for contraceptives: hormonal APIs, fixed combinations, implants, rings and intrauterine systems.
OpenEndocrinology QC Suite
QC package for endocrinology: thyroid, pituitary/peptide hormones, corticosteroids, sex hormones and selected metabolic medicines.
OpenGynecology QC Suite
QC package for gynecology: hormones, contraceptives, uterotonics, anti-infectives and women’s-health medicines.
OpenRadiology QC Suite
QC package for radiology and diagnostic imaging: radiopharmaceuticals, PET/SPECT, contrast media, iodinated and gadolinium products, plus particle, sterility and endotoxin checks.
Open