Mops
3-(N-morpholino)propanesulfonic acid is a Good's buffer substance, pKa = 7.2 at 20 C. It is an organosulfonic acid, a member of morpholines and a MOPS. It is a conjugate acid of a 3-(N-morpholino)propanesulfonate. It is a tautomer of a 3-(N-morpholiniumyl)propanesulfonate. — ChEBI
- IUPAC name
- 3-morpholin-4-ylpropane-1-sulfonic acid
- Molecular formula
- C7H15NO4S
- Molecular weight
- 209.27 g/mol
- Exact mass
- 209.07217913 Da
- XLogP3
- -3.1
- Topological polar surface area
- 75.2 Ų
- Hydrogen-bond donors
- 1
- Hydrogen-bond acceptors
- 5
- Covalent units
- 1
- Defined stereocentres
- 0
Also known as
16 more reported names
External database identifiers
- ChEBI:CHEBI:44115
- ChEMBL:CHEMBL1234443
- EPA DTXSID:DTXSID4044371
- PubMed:23050654
- PubMed:22999475
- PubMed:22806728
- PubMed:22784828
- PubMed:22701316
- PubMed:22693448
- PubMed:22691391
- PubMed:22679477
- PubMed:22666479
- PubMed:22629469
- PubMed:22615921
- PubMed:22615867
Evidence from additional scientific databases
NIH PubChem PUG-View
Attributed physical-property, hazard, environmental and use annotations.
- Physical Description: White solid; [Merck Index] White odorless powder; [Caledon Laboratories MSDS] Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
- Note: This chemical does not meet GHS hazard criteria for 45.9% (189 of 412) of reports. Source: European Chemicals Agency (ECHA)
- Signal: Warning Source: European Chemicals Agency (ECHA)
- GHS Hazard Statements: H315 (53.4%): Causes skin irritation [Warning Skin corrosion/irritation]; H319 (53.4%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]; H335 (52.7%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation] Source: European Chemicals Agency (ECHA)
- Precautionary Statement Codes: P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501 (click each P-code to see the statement) Source: European Chemicals Agency (ECHA)
- ECHA C&L Notifications Summary: Aggregated GHS information provided per 412 reports by companies from 18 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.; Reported as not meeting GHS hazard criteria per 189 of 412 reports by companies.; There are 16 notifications provided by 223 of 412 reports by companies with hazard statement code(s).; Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website. Source: European Chemicals Agency (ECHA)
- Sources/Uses: Used as a biological buffer; [Merck Index] Used as a laboratory reagent; [Caledon Laboratories MSDS] Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
Mapped by: Existing checksum-valid CAS to unique PubChem CID match. Retrieved: 2026-08-31. Open source record
Scientific classifications and hazard annotations provide context and do not replace the market-specific regulatory decision shown above.
Additional source coverage and match status
| Source | Result | Checked |
|---|---|---|
| NIH PubChem PUG-View | Exact match | 2026-08-31 |
A recorded no-match is useful evidence that the source was checked; it is not a claim that the substance does not exist elsewhere.
Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.