{"id":10620,"date":"2026-03-08T18:18:50","date_gmt":"2026-03-08T18:18:50","guid":{"rendered":"https:\/\/longchangextracts.com\/cyclopentylpropionyl-chloride-cas-104-97-2-a-comprehensive-guide-to-this-versatile-chemical-intermediate\/"},"modified":"2026-08-03T23:36:14","modified_gmt":"2026-08-03T23:36:14","slug":"cyclopentylpropionyl-chloride-cas-104-97-2-a-comprehensive-guide-to-this-versatile-chemical-intermediate","status":"publish","type":"post","link":"https:\/\/longchangextracts.com\/ru\/cyclopentylpropionyl-chloride-cas-104-97-2-a-comprehensive-guide-to-this-versatile-chemical-intermediate\/","title":{"rendered":"3-Cyclopentylpropanoyl Chloride CAS 104-97-2: Identity and Sourcing"},"content":{"rendered":"
\n

3-Cyclopentylpropanoyl chloride<\/strong> is the systematic name for the CAS 104-97-2 acyl chloride also called 3-cyclopentylpropionyl chloride or cyclopentanepropionyl chloride. NIST lists formula C8<\/sub>H13<\/sub>ClO and molecular weight 160.641. Buyers should state the CAS, structure and required analytical limits because shorter search phrases such as \u201ccyclopentyl chloride\u201d or \u201ccyclopropyl carbonyl chloride\u201d refer to different substances.<\/p>\n

3-Cyclopentylpropanoyl Chloride CAS 104-97-2: Identity and Sourcing<\/h1>\n

CAS 104-97-2 identity at a glance<\/h2>\n
\n\n\n\n\n\n\n\n\n\n\n
Preferred systematic name<\/th>\n3-Cyclopentylpropanoyl chloride<\/td>\n<\/tr>\n
Common source-record name<\/th>\n3-Cyclopentylpropionyl chloride<\/td>\n<\/tr>\n
CAS Registry Number<\/th>\n104-97-2<\/td>\n<\/tr>\n
\u041c\u043e\u043b\u0435\u043a\u0443\u043b\u044f\u0440\u043d\u0430\u044f \u0444\u043e\u0440\u043c\u0443\u043b\u0430<\/th>\nC8<\/sub>H13<\/sub>ClO<\/td>\n<\/tr>\n
\u041c\u043e\u043b\u0435\u043a\u0443\u043b\u044f\u0440\u043d\u0430\u044f \u043c\u0430\u0441\u0441\u0430<\/th>\n160.641 g\/mol<\/td>\n<\/tr>\n
InChIKey<\/th>\nSZQVEGOXJYTLLB-UHFFFAOYSA-N<\/td>\n<\/tr>\n
Canonical SMILES<\/th>\nClC(=O)CCC1CCCC1<\/td>\n<\/tr>\n
EC number<\/th>\n203-257-9<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n

Identity sources: NIST Chemistry WebBook: CAS 104-97-2<\/a> \u0438 PubChem CID 66039<\/a>.<\/p>\n

What is the difference from similarly named chlorides?<\/h2>\n

The full name matters. CAS 104-97-2 contains a cyclopentyl group connected through two methylene units to an acyl chloride group. A partial-name match does not establish the same structure, reactivity, specification or safety profile.<\/p>\n

\n\n\n\n\n\n\n\n\n\n
Search term<\/th>\nWhy it is not enough<\/th>\nBuyer action<\/th>\n<\/tr>\n<\/thead>\n
3-Cyclopentylpropionyl chloride<\/td>\nCommon name for the CAS 104-97-2 record<\/td>\nConfirm CAS, systematic name and structure<\/td>\n<\/tr>\n
Cyclopentyl chloride<\/td>\nDescribes a ring chloride rather than this acyl chloride<\/td>\nDo not treat as a synonym<\/td>\n<\/tr>\n
Cyclopropyl chloride<\/td>\nUses a different, smaller ring and is not the CAS 104-97-2 structure<\/td>\nDo not substitute by keyword similarity<\/td>\n<\/tr>\n
Cyclopropyl carbonyl chloride<\/td>\nHas a different ring and carbon skeleton<\/td>\nVerify the requested drawing or SMILES<\/td>\n<\/tr>\n
Cyclopentanecarbonyl chloride<\/td>\nPlaces the carbonyl chloride directly next to the ring rather than after the propanoyl chain<\/td>\nConfirm chain length before quotation<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n

What is CAS 104-97-2 used for?<\/h2>\n

CAS 104-97-2 is sold as an acyl chloride and research\/synthesis reagent. In a qualified route it may be evaluated as an acylating intermediate for preparing a downstream molecule. That class-level description does not prove suitability for a particular API, electronic material, fragrance, agrochemical, finished product or manufacturing scale.<\/p>\n

Before selecting it for a process, define the target transformation, stoichiometry, solvent and water controls, impurity limits, materials compatibility, quench strategy, scale and destination-market requirements. The buyer’s chemists and EHS team must validate the route against the current specification and SDS.<\/p>\n

How to interpret external catalog data<\/h2>\n

A current Thermo Scientific catalog entry for its own CAS 104-97-2 product lists GC assay \u226597.5%, refractive index 1.4630\u20131.4670 at 20 \u00b0C, clear colorless-to-yellow appearance and liquid form. These fields help define questions a buyer may ask, but they are not a Longchang specification, lot result, grade, inventory statement or supply guarantee.<\/p>\n

External reference: Thermo Scientific CAS 104-97-2 catalog record<\/a>.<\/p>\n

How to read the legacy Longchang source record<\/h2>\n

The historical product entry contains the values below. They have no displayed method, date, batch number or current approval status and therefore must not be treated as a current commercial specification.<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n
Legacy field<\/th>\nHistorical value<\/th>\nQualification action<\/th>\n<\/tr>\n<\/thead>\n
\u0412\u043d\u0435\u0448\u043d\u0438\u0439 \u0432\u0438\u0434<\/td>\n\u0421\u0432\u0435\u0442\u043b\u043e-\u0436\u0435\u043b\u0442\u0430\u044f \u0436\u0438\u0434\u043a\u043e\u0441\u0442\u044c<\/td>\nRequest the current color\/appearance method and acceptance range<\/td>\n<\/tr>\n
\u0410\u043d\u0430\u043b\u0438\u0437<\/td>\n98%; one historical result row shows 98.20%<\/td>\nRequest the current limit, method, basis and applicable lot COA<\/td>\n<\/tr>\n
3-Cyclopentylpropionic acid<\/td>\nHistorical result 0.6%; no limit shown<\/td>\nDefine the correct analyte name, method and maximum limit<\/td>\n<\/tr>\n
\u0414\u0440\u0443\u0433\u0438\u0435 \u0432\u0435\u0449\u0435\u0441\u0442\u0432\u0430<\/td>\nHistorical result 1.2%; no identities or limit shown<\/td>\nDefine named related substances, unknowns, total impurities and method<\/td>\n<\/tr>\n
Use field<\/td>\n\u201cAPI and electronic use\u201d<\/td>\nTreat as an unverified legacy label; validate the exact downstream process and market<\/td>\n<\/tr>\n
\u0423\u043f\u0430\u043a\u043e\u0432\u043a\u0430<\/td>\n50 kg steel drum<\/td>\nConfirm current net weight, lining, closure, moisture protection and transport status<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n

CAS 104-97-2 RFQ checklist<\/h2>\n