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38565-99-0

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38565-99-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 38565-99-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,8,5,6 and 5 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 38565-99:
(7*3)+(6*8)+(5*5)+(4*6)+(3*5)+(2*9)+(1*9)=160
160 % 10 = 0
So 38565-99-0 is a valid CAS Registry Number.

38565-99-0Downstream Products

38565-99-0Relevant articles and documents

METHOD FOR PREPARING 2-HYDROXYBUTYROLACTONE

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Paragraph 0128, (2013/08/15)

The invention relates to a method for preparing 2-hydroxybutyrolactone (2HBL) from a compound or its salt or its oligomers, said compound fitting formula (I) [in-line-formulae]CH3—S—CH2CH2CR1R2R3[/in-line-formulae]WhereinR1 represents HR2 represents a group selected from OH; OR4 and OCOR4 wherein R4 represents a group selected from linear, cyclic, alicyclic or branches alkyl groups having from 1 to 10 carbon atoms, and aryl groups having from 6 to 10 carbon atoms, optionally substituted with substituent(s) selected from linear or branched alkyl groups having from 1 to 10 carbon atoms, halogens and hydroxyl, amino, nitro and alkoxy groups having from 1 to 10 carbon atoms; and OSiRR′R″ wherein R, R′ and R″ are selected independently of each other from linear, cyclic, alicyclic or branched alkyl groups having from 1 to 10 carbon atoms, aryl groups having from 6 to 10 carbon atoms, optionally substituted with substituent(s) selected from linear or branched alkyl groups having from 1 to 10 carbon atoms, or R1 and R2 represent together ═O,R3 represents COOH or a COOR5 group wherein R5 represents a group selected from linear, cyclic, alicyclic or branched alkyl groups having from 1 to 10 carbon atoms, benzyl groups and benzyl groups substituted with one or two substituents selected from linear or branched alkyl groups having from 1 to 10 carbon atoms, halogens and hydroxyl, amino, nitro and alkoxy groups having from 1 to 10 carbon atoms, or R3 represents a cyano group,method according to whicha sulfonium of said compound is obtained, said sulfonium fitting the formula (II) [in-line-formulae][CH3][CH2CH2CR1R2CR3][CR6R7R8]S+X?[/in-line-formulae]wherein R1, R2 and R3 have the above definition, and R6 and R7 are selected independently of each other from H, linear, cyclic, alicyclic or branched alkyl groups having from 1 to 10 carbon atoms, and aryl groups having from 6 to 10 carbon atoms, optionally substituted with substituent(s) selected from linear or branched alkyl groups having from 1 to 10 carbon atoms, halides and hydroxyl, amino, nitro and alkoxy groups having from 1 to 10 carbon atoms; R8 is selected from H, linear, cyclic, alicyclic or branched alkyl groups having from 1 to 10 carbon atoms, aryl groups having from 6 to 10 carbon atoms, optionally substituted with substituent(s) selected from linear or branched alkyl groups having from 1 to 10 carbon atoms, and attractor groups notably those comprising a function selected from acid, ester, cyano functions and X represents a counter-ion, andthe thereby obtained sulfonium is hydrolyzed and2,4-dihydroxybutyric acid or its salt is cyclized into 2-hydroxybutyrolactone.

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