97939-17-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 97939-17-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,7,9,3 and 9 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 97939-17:
(7*9)+(6*7)+(5*9)+(4*3)+(3*9)+(2*1)+(1*7)=198
198 % 10 = 8
So 97939-17-8 is a valid CAS Registry Number.
97939-17-8Relevant articles and documents
REACTION DE WITTIG "ANORMALE"
Kolodiazhnyi, Oleg I.
, p. 439 - 442 (2007/10/02)
The reaction of P-chloroylids with aldehydes and ketones gives vinylphosphine oxydes.