Metacresol Ph. Eur./ USP parenteral grade / m-Cresol Ph. Eur./ USP parenteral grade is repackaged by Hedinger under clean room conditions into customized packaging sizes following IPEC-PQG GMP requirements for excipients:

  • Cleanrooms according to EU-GMP Part I, Annex 1 and ISO 14644
  • Class D (100,000) / ISO 8
  • Standard quantities (1 and 2.5 L brown glass bottle)
  • Qualification of the HVAC (Heating, Ventilation & Air-Conditioning) system according to EU-GMP Part I, Annex 15 and ISO 14644
  • Regular validation of cleanroom conditions (monitoring)
  • Airborne particles
  • Microbiology
  • State-of-the-art preventive maintenance of HVAC systems
  • Hygiene program for staff and premises
  • Regular hygiene training
  • Monitoring of staff health
  • Appropriate gowning and sanitation practices
  • Qualified packaging material
  • Audited suppliers
  • Defined specifications
  • Incoming inspection with verification of key quality parameters and batch release
  • No reuse of primary packaging materials (except stainless steel IBCs) 


Solvents of class 1- 3 except toluene are excluded by the manufacturing process. Toluene content complies with ICH limit of 890 ppm and the additional stricter limit of 100 ppm, typical content: < 10 ppm.

Every batch is analysed according to all parameters of this specification. The Certificate of Analysis (CoA) provides all results like above plus analysis date, date of manufacture and residual solvents statement. All CoAs are signed by a Qualified Person (QP) according to GMP (Article 49, 2001/83/EEC).

06311857 [M-Cresol high purity (Hedinger)]

Aug. Hedinger GmbH & Co. KG, D-Teutschenthal

Lanxess Deutschland GmbH, D-Leverkusen

  • 1L, 2.5L: manufacturing date plus 24 months
  • 100 mL: 12 months after repackaging date, not more than 24 months after manufacturing date

Acute Tox. 3, H301
Acute Tox. 3, H311
Skin Corr. 1B, H314
Aquatic Chronic 3, H412

Storage: In airtight containers, protected from light, under argon, storage temperature > 13 °C is recommended

Testing specifications: Ph. Eur. / USP / LSM 024.
The material meets all requirements of Ph. Eur. and USP.
Product code: 024

Download Specification


  • Testing of O2-content in gas phase
  • Sampling and optimized blanketing of drums with Argon [max. 0.1 % O2-content in gas phase]
  • Testing in the Hedinger GMP Quality Control Laboratory according to Ph. Eur. and USP using test methods of the pharmacopoeias
  • Endotoxin specification for parenteral grade
  • Batch release by a Qualified Person according to EU-GMP
  • Sub-batches (separate testing and release) for every repackaging process
  • Repackaging at Hedinger in a clean-room class D with Argon blanketing into 1 L and 2.5 L brown glass bottles (polystyrene case)
  • Qualification of the LANXESS production site according to IPEC GMPs for excipients Quality agreement between LANXESS and Hedinger including change control in place
  • All processes are designed to comply with IPEC GMPs and WHO GTDP Guidelines
  • UV-Absorption specification
  • Ongoing stability testing program (data available, but confidential)

Metacresol (m-Cresol) is manufactured by LANXESS based on IPEC PQC GMP Guidelines. There are special procedures in place at the manufacturing site to achieve this compliance and a program is ongoing to improve compliance permanently.

Metacresol Ph. Eur. /USP parenteral grade

Metacresol (m-Cresol) Ph. Eur./ USP parenteral grade characteristics

  • Metacresol (m-Cresol) production equipment is closed and dedicated
  • Raw materials are supplied online into the production unit
  • Specifications define raw materials quality
  • Metacresol (m-Cresol) high purity (Hedinger) is specifically produced to comply with the purity requirements of the monographs for Metacresol in Ph. Eur. and USP
  • o-Cresol ≤ 0.5 %
  • p-Cresol ≤ 0.5 %
  • any other impurity each ≤ 0.1 %
  • Process revision has been planned and implemented using a HACCP study

For further information, please contact mcresolhedingerde.

We would also welcome your telephone call.

Aug. Hedinger GmbH & Co. KG - Headquarters in Stuttgart, Germany
phone: +49 - (0)711 - 40 20 50