TigecyclineQualityChecker

Tigecycline

antibiotics antivirals API biologics endotoxins essential medicines global market heavy metals

Tigecycline Quality Checker — Glycylcycline Antibiotic (Ph. Eur., USP)

️ The utility checks epi-tigecycline, anhydro-tigecycline, solution color, endotoxins, sterility.
ℹ️ Does not use machine learning — rule-based logic only.
⚠️ CRITICAL! Epi-tigecycline ≤2.0%. Solution color (Abs) ≤0.25. Endotoxins ≤0.5 EU/mg!

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

Input format:
BatchNumber,Assay_Percent,Loss_On_Drying_Percent,Epi_Tigecycline_Percent,Anhydro_Tigecycline_Percent,Oxidized_Impurity_Percent,Related_Substances_Total_Percent,Color_of_Solution_Absorbance,pH_Value_Reconstituted,Residual_Solvent_Acetonitrile_ppm,Residual_Solvent_Methanol_ppm,Residual_Solvent_Ethanol_ppm,Residual_Solvent_Toluene_ppm,SterilityTest,Bacterial_Endotoxins_EU_per_mg,Heavy_Metals_ppm,Microbial_Count_TAMC,Microbial_Count_TYMC,EColi_Detected,Salmonella_Detected

Example:
TIG-SUB-2026-001,98.5,3.0,0.8,0.4,0.3,1.8,0.15,3.8,150,600,1200,100,0,0.2,8,15,5,0,0

— WHY IS THIS NEEDED?
Tigecycline — glycylcycline antibiotic (tetracycline derivative) for resistant infections treatment:
• Tetracycline Instability: Tigecycline is prone to epimerization at position 4 (forming epi-tigecycline) and dehydration (forming anhydro-tigecycline). These degradation products are less active and may be toxic. Control of their levels is critical.
• Solution Color: Degradation products often have a yellow-orange color. Measuring optical density (color) of the solution is a rapid indicator of quality and degree of degradation.
• Parenteral Administration: Drug is administered intravenously. Therefore, requirements for sterility, endotoxins (≤0.5 EU/mg), and microbiological purity are extremely high.
• Residual Solvents: Synthesis and purification processes are complex, requiring strict control of residual solvents.
⚠️ CRITICAL:
• Potency (Assay): 95–102%
• Loss on Drying: ≤ 5.0%
• Epi-Tigecycline: ≤ 2.0% (Critical!)
• Anhydro-Tigecycline: ≤ 1.0%
• Total Related Substances: ≤ 3.0%
• Solution Color (Abs): ≤ 0.25 (Degradation indicator)
• Reconstituted Solution pH: 3.0–4.5
• Heavy Metals: ≤ 20 ppm
• Endotoxins: ≤ 0.5 EU/mg (Critical for injection)
• Sterility: No growth
• Microbiology: TAMC ≤ 100 CFU/g, TYMC ≤ 10 CFU/g
⚠️ Note: Utility focuses on specific degradation products of the tetracycline series (epi- and anhydro-forms) and color control as a stability marker. Deviation in epi-tigecycline content or increased solution color indicates improper storage or synthesis. Endotoxin and sterility control is mandatory for parenteral forms.

input.csv

BatchNumber,Assay_Percent,Loss_On_Drying_Percent,Epi_Tigecycline_Percent,Anhydro_Tigecycline_Percent,Oxidized_Impurity_Percent,Related_Substances_Total_Percent,Color_of_Solution_Absorbance,pH_Value_Reconstituted,Residual_Solvent_Acetonitrile_ppm,Residual_Solvent_Methanol_ppm,Residual_Solvent_Ethanol_ppm,Residual_Solvent_Toluene_ppm,SterilityTest,Bacterial_Endotoxins_EU_per_mg,Heavy_Metals_ppm,Microbial_Count_TAMC,Microbial_Count_TYMC,EColi_Detected,Salmonella_Detected
TIG-SUB-2026-001,98.5,3.0,0.8,0.4,0.3,1.8,0.15,3.8,150,600,1200,100,0,0.2,8,15,5,0,0

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: TigecyclineQualityCheckerAPI / object: TigecyclineCategory: Global API expansion

1. Scope

The Tigecycline Quality Checker utility is used for Tigecycline. 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 expansion

Tags: antibiotics, antivirals, API, biologics, endotoxins, essential medicines, global market, heavy metals, impurities, injectables, microbiology, oncology

2. Execution modes

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

3. Key controlled areas

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

4. Domain limits and critical parameters

⚠️ CRITICAL! Epi-tigecycline ≤2.0%. Solution color (Abs) ≤0.25. Endotoxins ≤0.5 EU/mg!
Parenteral Administration: Drug is administered intravenously. Therefore, requirements for sterility, endotoxins (≤0.5 EU/mg), and microbiological purity are extremely high.
⚠️ CRITICAL:
Potency (Assay): 95–102%
Loss on Drying: ≤ 5.0%
Epi-Tigecycline: ≤ 2.0% (Critical!)
Anhydro-Tigecycline: ≤ 1.0%
Total Related Substances: ≤ 3.0%
Solution Color (Abs): ≤ 0.25 (Degradation indicator)
Reconstituted Solution pH: 3.0–4.5
Heavy Metals: ≤ 20 ppm
Endotoxins: ≤ 0.5 EU/mg (Critical for injection)
Sterility: No growth
Microbiology: TAMC ≤ 100 CFU/g, TYMC ≤ 10 CFU/g
⚠️ Note: Utility focuses on specific degradation products of the tetracycline series (epi- and anhydro-forms) and color control as a stability marker. Deviation in epi-tigecycline content or increased solution color indicates improper storage or synthesis. Endotoxin and sterility control is mandatory for parenteral forms.

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

ID	Requirement	Criticality	Acceptance criterion
URS-001	The system shall accept an `input.csv` file for Tigecycline 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, 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	`TIG-SUB-2026-001`	mandatory field; used for batch/lot traceability
2	`Assay_Percent`	decimal	%	Assay %	`98.5`	numeric value; compared with assay/purity limit from specification or method
3	`Loss_On_Drying_Percent`	decimal	%	Loss On Drying %	`3.0`	mandatory numeric value; rule comparison is performed by the utility
4	`Epi_Tigecycline_Percent`	decimal	%	Epi Tigecycline %	`0.8`	mandatory numeric value; rule comparison is performed by the utility
5	`Anhydro_Tigecycline_Percent`	decimal	%	Anhydro Tigecycline %	`0.4`	mandatory numeric value; rule comparison is performed by the utility
6	`Oxidized_Impurity_Percent`	decimal	%	Oxidized Impurity %	`0.3`	numeric value; compared with individual or total impurity limit
7	`Related_Substances_Total_Percent`	decimal	%	Related Substances Total %	`1.8`	numeric value; compared with individual or total impurity limit
8	`Color_of_Solution_Absorbance`	decimal	as specified	Color of Solution Absorbance	`0.15`	mandatory numeric value; rule comparison is performed by the utility
9	`pH_Value_Reconstituted`	decimal	pH	p H Value Reconstituted	`3.8`	mandatory numeric value; rule comparison is performed by the utility
10	`Residual_Solvent_Acetonitrile_ppm`	decimal	ppm	Residual Solvent Acetonitrile ppm	`150`	numeric value; checked as residual solvent against the applicable limit
11	`Residual_Solvent_Methanol_ppm`	decimal	ppm	Residual Solvent Methanol ppm	`600`	numeric value; checked as residual solvent against the applicable limit
12	`Residual_Solvent_Ethanol_ppm`	decimal	ppm	Residual Solvent Ethanol ppm	`1200`	numeric value; checked as residual solvent against the applicable limit
13	`Residual_Solvent_Toluene_ppm`	decimal	ppm	Residual Solvent Toluene ppm	`100`	numeric value; checked as residual solvent against the applicable limit
14	`SterilityTest`	boolean / flag	0/1	Sterility Test	`0`	valid flag required; prohibited organisms and growth are normally expected as 0 / absent
15	`Bacterial_Endotoxins_EU_per_mg`	decimal	EU/ml	Bacterial Endotoxins EU per mg	`0.2`	numeric value; critical safety attribute compared with endotoxin limit
16	`Heavy_Metals_ppm`	decimal	ppm	Heavy Metals ppm	`8`	numeric value; checked as elemental/metal impurity
17	`Microbial_Count_TAMC`	decimal	as specified	Microbial Count TAMC	`15`	numeric value; compared with microbiological limits
18	`Microbial_Count_TYMC`	decimal	as specified	Microbial Count TYMC	`5`	numeric value; compared with microbiological limits
19	`EColi_Detected`	boolean / flag	0/1	EColi Detected	`0`	valid flag required; prohibited organisms and growth are normally expected as 0 / absent
20	`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,Loss_On_Drying_Percent,Epi_Tigecycline_Percent,Anhydro_Tigecycline_Percent,Oxidized_Impurity_Percent,Related_Substances_Total_Percent,Color_of_Solution_Absorbance,pH_Value_Reconstituted,Residual_Solvent_Acetonitrile_ppm,Residual_Solvent_Methanol_ppm,Residual_Solvent_Ethanol_ppm,Residual_Solvent_Toluene_ppm,SterilityTest,Bacterial_Endotoxins_EU_per_mg,Heavy_Metals_ppm,Microbial_Count_TAMC,Microbial_Count_TYMC,EColi_Detected,Salmonella_Detected
TIG-SUB-2026-001,98.5,3.0,0.8,0.4,0.3,1.8,0.15,3.8,150,600,1200,100,0,0.2,8,15,5,0,0

7. FS — functional specification

ID	Function	Implementation description
FS-001	CLI entry point	The executable `TigecyclineQualityChecker.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 Tigecycline, 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": "TigecyclineQualityChecker",
  "api": "Tigecycline",
  "batchNumber": "TIG-SUB-2026-001",
  "overallStatus": "PASS|WARNING|FAIL",
  "checkedAtUtc": "2026-05-18T00:00:00Z",
  "checks": [
    {
      "parameter": "BatchNumber",
      "value": "TIG-SUB-2026-001",
      "unit": "as specified",
      "status": "PASS|WARNING|FAIL",
      "message": "Rule-based check result"
    },
    {
      "parameter": "Assay_Percent",
      "value": "98.5",
      "unit": "%",
      "status": "PASS|WARNING|FAIL",
      "message": "Rule-based check result"
    },
    {
      "parameter": "Loss_On_Drying_Percent",
      "value": "3.0",
      "unit": "%",
      "status": "PASS|WARNING|FAIL",
      "message": "Rule-based check result"
    },
    {
      "parameter": "Epi_Tigecycline_Percent",
      "value": "0.8",
      "unit": "%",
      "status": "PASS|WARNING|FAIL",
      "message": "Rule-based check result"
    },
    {
      "parameter": "Anhydro_Tigecycline_Percent",
      "value": "0.4",
      "unit": "%",
      "status": "PASS|WARNING|FAIL",
      "message": "Rule-based check result"
    },
    {
      "parameter": "Oxidized_Impurity_Percent",
      "value": "0.3",
      "unit": "%",
      "status": "PASS|WARNING|FAIL",
      "message": "Rule-based check result"
    },
    {
      "parameter": "Related_Substances_Total_Percent",
      "value": "1.8",
      "unit": "%",
      "status": "PASS|WARNING|FAIL",
      "message": "Rule-based check result"
    },
    {
      "parameter": "Color_of_Solution_Absorbance",
      "value": "0.15",
      "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-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

Australia: national essential medicines QC package

QC utility package aligned with the country essential/reimbursed medicines list analogue and cross-checked against WHO EML. Only utilities already present in the portal are included; the package is a validation/discussion starting map, not an official registry copy.

Open

Infectious Diseases QC Suite

QC utility package for infectious diseases: antibacterial, antiviral, antifungal and antiparasitic products, microbiology, sterility, endotoxins, viral safety and vaccine release checks.

Open