83670-27-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 83670-27-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,3,6,7 and 0 respectively; the second part has 2 digits, 2 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 83670-27:
(7*8)+(6*3)+(5*6)+(4*7)+(3*0)+(2*2)+(1*7)=143
143 % 10 = 3
So 83670-27-3 is a valid CAS Registry Number.
83670-27-3Relevant articles and documents
ACYLATION REACTIONS OF SILYLATED BUTADIYNES: SYNTHESIS OF SOME NATURALLY OCCURRING DIACETYLENIC KETONES
Jones, Graham E.,Holmes, Andrew B.
, p. 3203 - 3206 (1982)
Acylation of 4-substituted 1-trimethylsilylbuta-1,3-diynes (2) with suitable acyl halides in the presence of titanium tetrachloride gave diacetylenic ketones (3) including the naturally occurring compounds (3c), (3e), and (3f).