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128175-77-9

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128175-77-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 128175-77-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,1,7 and 5 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 128175-77:
(8*1)+(7*2)+(6*8)+(5*1)+(4*7)+(3*5)+(2*7)+(1*7)=139
139 % 10 = 9
So 128175-77-9 is a valid CAS Registry Number.

128175-77-9Relevant articles and documents

TRANSFORMATION OF ORGANOPHOSPHORUS S-TRIFLUOROMETHYLTHIOATES RR'P(O)SCF3 INTO FLUORIDES RR'P(O)F. STEREOCHEMICAL ASPECTS OF THIOCARBONYL FLUORIDE EXTRUSION

Lopusinski, Andrezej

, p. 383 - 390 (2007/10/02)

The stereochemical course of the thermal or by nucleophiles catalyzed extrusion reaction of thiocarbonyl fluoride from two diastereomeric (6) and optically active (10) organophosphorus S-trifluoromethylthioates has been investigated.To explain the observed retention of configuration at phosphorus in fluoridates 7 formed in the thermal reactions, a four center transition state for such reactions has been proposed.The lack of the stereoselectivity in the catalyzed reactions of 6, and the observed racemization of the final product 11 are briefly discussed.

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