2750-69-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2750-69-8 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,7,5 and 0 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 2750-69:
(6*2)+(5*7)+(4*5)+(3*0)+(2*6)+(1*9)=88
88 % 10 = 8
So 2750-69-8 is a valid CAS Registry Number.
2750-69-8Relevant articles and documents
SYNTHESIS OF 4-ALKYL-TRIMETHYLSILYLBUTA-1,3-DIYNES
Holmes, Andrew B.,Jones, Graham E.
, p. 3111 - 3112 (1980)
Lithium trimethylsilylbutadiyn (2) is alkylated by primary alkyl halides in THF-HMPA or via the ethylenediamine complex (4) in THF-DMSO to give the title compounds (3) in good yield.