81357-01-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81357-01-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,3,5 and 7 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 81357-01:
(7*8)+(6*1)+(5*3)+(4*5)+(3*7)+(2*0)+(1*1)=119
119 % 10 = 9
So 81357-01-9 is a valid CAS Registry Number.
81357-01-9Relevant articles and documents
THE SYNTHESIS OF αβ-UNSATURATED KETONES FROM β-SILYLENONES AND β-SILYLYNONES
Fleming, Ian,Perry, David A.
, p. 4027 - 4034 (1981)
Conjugate addition, followed by alkylation, bromination and desilyl-bromination make the β-silylketone (4) an a3d2-synthon (5) and the β-silylynone (6) a 2a3d2-synthon (7).