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API Process Intermediates & Related Compounds

L-Cysteinesulfinic Acid Monohydrate

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Buy L-Cysteinesulfinic Acid Monohydrate (CAS 207121-48-0) from Zemixal. Request a quote with price, lead time and documents.

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L-Cysteinesulfinic Acid Monohydrate chemical structure
CAS number207121-48-0
FormulaC3H9NO5S
Molar mass171.17 g/mol
Physical formSolid
InChIKeyYQIXTMZYGQXTCZ-DKWTVANSSA-N
IUPAC name(2R)-2-amino-3-sulfinopropanoic acid;hydrate

About L-Cysteinesulfinic Acid Monohydrate

Researchers and plant chemists source L-Cysteinesulfinic Acid Monohydrate from Zemixal for routine and specialised work. Key data: CAS 207121-48-0, formula C3H9NO5S and molar mass 171.17 g/mol. It is handled as a solid.

Typical applications

  • API route development
  • Impurity fate & purge studies
  • Analytical method development

Storage and safety notes

It carries the GHS signal word Warning (H315, H319 and H335), so wear gloves and eye protection and work with good ventilation.

Standard pack sizes are 10 mg, 25 mg, 50 mg and 100 mg, and custom quantities are quoted on request. You receive a batch certificate of analysis and a 16-section SDS with each order. Send an enquiry through the quote panel and you get a formal offer with Incoterms and delivery time.

Reference standards for Carbocysteine

See every impurity, metabolite and related compound we list for this API.

Carbocysteine standards

Typical uses

  • API route development
  • Impurity fate & purge studies
  • Analytical method development

Applications

Pharmaceutical Manufacturing and QCResearch Labs and Universities

Specifications and identifiers

Specifications of L-Cysteinesulfinic Acid Monohydrate
Product nameL-Cysteinesulfinic Acid Monohydrate
Catalogue numberZX-038914
CAS number207121-48-0
IUPAC name(2R)-2-amino-3-sulfinopropanoic acid;hydrate
Molecular formulaC3H9NO5S
Molar mass171.17 g/mol
Exact mass171.0201
Physical formSolid
H-bond donors / acceptors4 / 7
Topological polar surface area121 Ų
InChIKeyYQIXTMZYGQXTCZ-DKWTVANSSA-N
SMILESC([C@@H](C(=O)O)N)S(=O)O.O
PubChem CID16211766
SynonymsL-cysteine Sulfinilic Acid Monohydrate, L-Alanine, 3-sulfino-, hydrate (1:1), Sulfino-L-alanine hydrate, 3-Sulfino-L-alanine Monohydrate, Sulfino-L-Alanine Monohydrate, L-Cysteinesulfinic Acid (hydrate), L-Cysteinesulphinic acid monohydrate, 3-Sulfino-L-alanine--water (1/1)

Lot values are stated on the batch certificate of analysis. Ask for a typical COA with your quotation.

Safety and GHS hazards

GHS07 Irritant or harmful
Irritant or harmful

Signal word Warning

  • H315Causes skin irritation
  • H319Causes serious eye irritation
  • H335May cause respiratory irritation

Precautionary statements P261, P264, P264 + P265, P271, P280, P302 + P352, P304 + P340, P305 + P351 + P338, P319, P321, P332 + P317, P337 + P317, P362 + P364, P403 + P233, P405, P501

Classification summarised from public GHS notifications. It can vary with grade and concentration, so always follow the SDS supplied with your lot.

Pack sizes

Pack sizes of L-Cysteinesulfinic Acid Monohydrate
10 mgQuoted on request
25 mgQuoted on request
50 mgQuoted on request
100 mgQuoted on request

Need a different size? Bulk drums and custom packing are quoted on request through the quote form on this page.

Questions about L-Cysteinesulfinic Acid Monohydrate

Which CAS number identifies L-Cysteinesulfinic Acid Monohydrate?
L-Cysteinesulfinic Acid Monohydrate is registered under CAS 207121-48-0. You may also see it listed as L-cysteine Sulfinilic Acid Monohydrate, L-Alanine, 3-sulfino-, hydrate (1:1), Sulfino-L-alanine hydrate. Our catalogue number for this item is ZX-038914.
What are the formula and molar mass of L-Cysteinesulfinic Acid Monohydrate?
For L-Cysteinesulfinic Acid Monohydrate, its formula is C3H9NO5S and its molar mass is 171.17 g/mol. InChIKey YQIXTMZYGQXTCZ-DKWTVANSSA-N lets you match it in any structure database.
How is L-Cysteinesulfinic Acid Monohydrate used in pharmaceutical QC?
L-Cysteinesulfinic Acid Monohydrate is a characterised reference material linked to Carbocysteine. Laboratories use it to identify and quantify this impurity during method development and validation, stability work, batch release testing and regulatory submissions.
What grade and pack sizes are available for L-Cysteinesulfinic Acid Monohydrate?
The grade and assay are confirmed on the quotation and the batch COA. Standard packs are 10 mg, 25 mg, 50 mg, 100 mg. Larger quantities and custom packing can be quoted on request.
Which documents come with L-Cysteinesulfinic Acid Monohydrate?
Each lot ships with a batch certificate of analysis and a 16-section GHS safety data sheet. A typical COA or specification sheet can be shared with the quotation before you order.
Can Zemixal ship L-Cysteinesulfinic Acid Monohydrate to my country?
Yes. Because L-Cysteinesulfinic Acid Monohydrate is classed as hazardous, it travels in UN-approved packaging as dangerous goods under IATA or IMDG rules, with the export paperwork your broker needs.

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