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133832-44-7

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133832-44-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 133832-44-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,3,8,3 and 2 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 133832-44:
(8*1)+(7*3)+(6*3)+(5*8)+(4*3)+(3*2)+(2*4)+(1*4)=117
117 % 10 = 7
So 133832-44-7 is a valid CAS Registry Number.

133832-44-7Downstream Products

133832-44-7Relevant articles and documents

Site-Selective Hydroxylation of Steroids via Oxometalloporphinates Covalently Linked to Ring D: Introduction of Hydroxyl Groups into the C(9) and C(12) Position of 5α-Androstanes

Stuk, Timothy L.,Grieco, Paul A.,Marsh, Max M.

, p. 2957 - 2959 (1991)

Oxidation of synthetic manganese(III) porphyrins attached to steroidal substrates at C(17) (cf. 2 and 3) gives rise to hydrogen atom abstraction at C(9) and/or C(12), thereby leading to hydroxyl incorporation at these sites.The use of more robust metalloporphyrins (cf. 9) results in substantial increases in the yields of hydroxylated 5α-androstanes.

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