Canonical ingredient

L-Cysteine

L-CYSTEINE

340 linked products

Official identifiers

CAS 52-90-4 NHPID_ID 7278

Names and synonyms

L-Cysteine (en)
L-Cysteine (fr)
L-cystéine (fr)
2-Cystéine (fr-CA)

Source-scoped chemical properties

Every value keeps its own authority, licence and retrieval date. Conflicting values are not silently merged.

canada dsl listing: listed; canada_dsl_categorization · Open Government Licence - Canada 2.0 · 2026-08-03
dsl bioaccumulative: No; canada_dsl_categorization · Open Government Licence - Canada 2.0 · 2026-08-03
dsl inherently toxic aquatic: No; canada_dsl_categorization · Open Government Licence - Canada 2.0 · 2026-08-03
dsl meets cepa categorization: No; canada_dsl_categorization · Open Government Licence - Canada 2.0 · 2026-08-03
dsl meets environmental: No; canada_dsl_categorization · Open Government Licence - Canada 2.0 · 2026-08-03
dsl meets human health: No; canada_dsl_categorization · Open Government Licence - Canada 2.0 · 2026-08-03
dsl persistent: No; canada_dsl_categorization · Open Government Licence - Canada 2.0 · 2026-08-03
dsl substance category: Organics; canada_dsl_categorization · Open Government Licence - Canada 2.0 · 2026-08-03

Equivalent concepts in other registries

These links require an exact shared identifier; names alone are never sufficient.

L -cysteine
GLOBAL · CAS 52-90-4
Verification source

Safety and technical documents

General references and manufacturer-specific SDS documents are kept separate.

0 document(s)

No verified SDS or technical sheet is linked yet. This absence is explicit and does not mean that no document exists.

End-to-end traceability

Only links supported by an identified source are published. Missing evidence remains explicitly unknown.

Partial chain

Evidence still missing

Country or region of origin
Raw-material producer
Ingredient manufacturer
Distributor
Transformation steps

Documented origins

No origin has been proven yet by an explicit source.

Documented organizations

No organization has been proven yet by an explicit source.

Documented transformations

No transformation step has been proven yet by an explicit source.

Method: a company’s registration country is never used as evidence of a material’s origin.

Products containing this ingredient

25 billion immune support

975 Clarifying Therapy Clear Skin Complex: Acne Treatment Gel

ADRIEN GAGNON FEMINEX CHEVEUX ET ONGLES/HAIR AND NAILS

50 · milligrams

ADRIEN GAGNON FEMINEX CHEVEUX ET ONGLES/HAIR AND NAILS 500mcg Biotin

100 · milligrams

ADRIEN GAGNON FEMINEX CHEVEUX ET ONGLES/HAIR AND NAILS PREMIUM 500mcg Biotin

AGE SIGNES DEFENSE SPF 15

AMINODERM POUDRE

Absorb Plus - Caramel Toffee Twist

19.75 · milligrams

Absorb Plus - Chocolate Royale

19.75 · milligrams

Absorb Plus - Chocolate Royale

19.75 · milligrams

Absorb Plus - French Vanilla

19.75 · milligrams

Absorb Plus - Mocha Grande

19.75 · milligrams

Absorb Plus - Natural Berry Flavour

19.75 · milligrams

Absorb Plus - Natural Berry Flavour

19.75 · milligrams

Absorb Plus - Simply Berry Flavour

19.75 · milligrams

Absorb Plus - Simply Chocolate Flavour

Absorb Plus - Simply Vanilla Flavour

Absorb Plus - Simply Vanilla Flavour

19.75 · milligrams

Absorb Plus - Unsweetened Vanilla

19.75 · milligrams

Absorb Plus - Unsweetened Vanilla

19.75 · milligrams

Absorb Plus Amino

Adrien Gagnon NMN 15000 Women

Agony Amino 9000

Agony L-Glutamine

Albumin Complex Gold

Alkahest Cysteine+B6

Arca Highmed Hair Skin & Nail Capsules

BABY COLIC LIQUID DROPS PROBIOTIC

BABY COLIC LIQUID DROPS PROBIOTIC

BABY COLIC LIQUID DROPS PROBIOTIC

BABY COLIC LIQUID DROPS PROBIOTIC

BABY COLIC LIQUID DROPS PROBIOTIC+Vit D 400 IU

BABY COLIC LIQUID PROBIOTIC+Algal DHA

BABY COLIC PROBIOTIC LIQUID DROPS+Vit D 400 IU+LACTOFERRIN

325 · milligrams

BIOTIX ENFANTS 2 MILLIARDS 5 GOUTTES

Baby Probiotic by Ddrops® Company

Beauty Glow Capsule

25 · milligrams

Best for Bread Whole Wheat Flour