133337-82-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 133337-82-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,3,3,3 and 7 respectively; the second part has 2 digits, 8 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 133337-82:
(8*1)+(7*3)+(6*3)+(5*3)+(4*3)+(3*7)+(2*8)+(1*2)=113
113 % 10 = 3
So 133337-82-3 is a valid CAS Registry Number.
133337-82-3Relevant articles and documents
Manganese Carbonyl and Phase Transfer catalysed, Stereospecific Hydroacylation of Allenes to α,β-Unsaturated Ketones
Satyanarayana, Nistala,Alper, Howard
, p. 8 - 9 (1991)
Phase transfer (5 mmol dm-3 NaOH, CH2Cl2, cetyltrimethylammonium bromide) catalysed reaction of allenes with carbon monoxide, decacarbonyldimanganese and methyl iodide affords α,β-unsaturated ketones in a stereospecific process.