Product Category

Buffer/ GMP Solution

ICH-Q7 GMP Manufactured Product

Guanidine HCl 6M Buffer Solution
GMP Excipient Grade

Product Code: GHCL-3101 | Previously: GH3101

Intended For Critical Biopharma Applications

Guanidine Hydrochloride 6M Buffer Solution can be used to denature proteins which become randomly coiled with no residual structure. This concentration is also used to decrease enzyme activity. The denatured proteins can be modified or analyzed using mass spectrometry, electrophoresis and enzymatic digests. As a chaotropic agent, Guanidine Hydrochloride Buffer Solution is also used to break the hydrogen bonds in the structure of proteins and increase the solubility of hydrophobic molecules.

Product Specifications



Absorbance 260nm
0.1 a.u. max.
Appearance and Color  
Clear, Colorless Liquid
Passes Test
Heavy Metals  
≤ 10 ppm
Identification (IR)  
Passes Test

≤ 3 ppm

5.8 – 6.2M

4.5 – 6.5

Printable Version

Key Compliance Attributes of BioSpectra Grades Bio Excipient Grade ICH-Q7 Compliant Manufactured
Suitable for Research and Diagnostic  
Each Batch 100% Analyzed  
Management of Change  
Validated Analytical Methods  
Compendial Testing  
Trace Metals Analyzed  
Stability Testing Program  
BioSpectra Supply Chain Audit Trail  
Product Origin Statement  
Customer Quality Audits  
Validated Manufacturing Process  
US Manufactured at BioSpectra  
Customized Additional Specifications  
Multi-Compendial Testing  
Low Bioburden Low Endotoxin (LBLE)  
Enzyme Tested  
Suitable for use as Excipient  
Microbial / Endotoxin Tested  
Manufactured in FDA Registered Facility  
Customized Manufacturing Schedule  
Custom Regulatory Packet  
Accelerated Stability  
Video Conference access to BioSpectra Sites  
Complete access to Product Traceability  
Access to Supply Chain Information  
ICH-Q7 Qualified Utilities  
ICH-Q7 Compliant Manufactured  
Type II Drug Master File  

Yes-imageindicates an attribute or level of compliance which is granted or available based on the purchase of the product grade.
Bio Excipient Grade: Intended for use as ICH-Q7 Compliant Active Pharmaceutical Ingredient 
LBLE: LBLE applies when product specifications include requirements for Bioburden Testing (TAMC/TYMC and/or Endotoxin).
LBLE stands for Low Bioburden, Low Endotoxin non-sterile products suitable for further use in parenteral manufacturing and other sterile applications.


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General Product Description:

  • The manufacturing of Bio Excipient Grade Guanidine Hydrochloride 6M Buffer Solution, GHCL-3101 is performed at BioSpectra’s Bangor, PA facility and is conducted in a dedicated processing area using only dedicated equipment. Cleaning verification is performed on the dedicated manufacturing equipment.
  • Molecular Formula: CH5N3 • HCl
  • Molecular Weight: 95.53 g/mol.
  • CAS #: 50-01-1
  • Guanidine Hydrochloride 6M Buffer Solution is a clear colorless solution.
  • There are no known major food allergens (as defined by FDA and WHO) in the manufacture of this product.
  • BioSpectra certifies that all Guanidine Hydrochloride 6M Buffer Solution, GHCL-3101 manufactured at BioSpectra and its raw materials are not derived from or come in contact with animal parts, products and/or byproducts.
  • Guanidine Hydrochloride 6M Buffer Solution manufactured at BioSpectra and any raw materials used in the manufacture of Guanidine Hydrochloride 6M Buffer Solution at BioSpectra are not subject to genetic modification.
  • Synonyms: Guanidine Monohydrochloride, Guanidinium Chloride, Guanidinium Hydrochloride Buffer Solution.
  • Manufactured with USP grade purified water.

GMP Compliance:

Bio Excipient Grade Guanidine HCl 6M Buffer Solution, GHCL-3101 is suitable for use as an excipient. It is manufactured in accordance with the ICH-Q7 Good Manufacturing Practice Guide. This grade of Guanidine HCl 6M Buffer Solution is not suitable to be used as an Active Pharmaceutical Ingredient, Drug Product or Household Item.

Retest Date:

The recommended retest period for Guanidine Hydrochloride 6M Buffer Solution is two years from the date of manufacture.

Storage and Shipping Conditions:

Ship and store in ambient temperature.

Package Sizes:

200L drums and 1135L totes.

Additional Packaging Information